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Float

rain_math_float

Struct Float 

Source 
pub struct Float(/* private fields */);

Implementations§

Source§

impl Float

Source

pub fn as_hex_js(&self) -> String

Returns the 32-byte hexadecimal string representation of the float.

§Returns
  • String - The 32-byte hex string.
§Example
const float = Float.fromHex("0x0000000000000000000000000000000000000000000000000000000000000005").value!;
assert(float.asHex() === "0x0000000000000000000000000000000000000000000000000000000000000005");
Source

pub fn to_bigint(&self) -> BigInt

Convert the float to a JS/TS bigint equivalent of asHex() returned hex string.

§Throws

if conversion fails.

§Example
const float = Float.fromHex("0xfffffffe0000000000000000000000000000000000000000000000000000013a");
const value = float.toBigInt();
assert(value === 115792089183396302089269705419353877679230723318366275194376439045705909141818n);
Source

pub fn from_bigint(value: BigInt) -> Float

Constructs a Float from a bigint equivalent of the fromHex() returned Float.

§Throws

if conversion fails.

§Example
const float = Float.fromBigint(115792089183396302089269705419353877679230723318366275194376439045705909141818n);
assert(float.asHex() === "0xfffffffe0000000000000000000000000000000000000000000000000000013a");
Source

pub fn from_fixed_decimal_lossy_js( value: BigInt, decimals: u8, ) -> Result<FromFixedDecimalLossyResult, JsValue>

Converts a fixed-point decimal value to a Float using the specified number of decimals, allowing lossy conversions and reporting whether precision was preserved.

This function attempts to convert a fixed-point decimal representation to a Float. Unlike fromFixedDecimal, this method will not fail if precision is lost during conversion, but instead reports the loss through the lossless flag in the result.

§Arguments
  • value - The fixed-point decimal value as a bigint (e.g., 12345n for 123.45 with 2 decimals).
  • decimals - The number of decimal places in the fixed-point representation (0-255).
§Returns

Returns a FromFixedDecimalLossyResult containing:

  • float - The resulting Float value.
  • lossless - Boolean flag indicating whether the conversion preserved all precision (true) or was lossy (false).
§Errors

Throws a JsValue error if:

  • The bigint value cannot be converted to a string.
  • The value string cannot be parsed as a valid U256.
  • The underlying EVM conversion fails.
§Example
// Lossless conversion
const result = Float.fromFixedDecimalLossy(12345n, 2);
const float = result.float;
const wasLossless = result.lossless;
assert(float.format()?.value === "123.45");
assert(wasLossless === true);

// Potentially lossy conversion
const result2 = Float.fromFixedDecimalLossy(123456789012345678901234567890n, 18);
if (!result2.lossless) {
  console.warn("Precision was lost during conversion");
}
Source§

impl Float

Source

pub fn try_to_bigint(&self) -> Result<BigInt, FloatError>

Tries to convert the float to a JS/TS bigint equivalent of asHex() returned hex string.

§Returns
  • Ok(bigint) - The resulting bigint value.
  • Err(FloatError) - If the conversion fails.
§Example
const float = Float.fromHex("0xfffffffe0000000000000000000000000000000000000000000000000000013a");
const bigintResult = float.tryToBigInt();
if (bigintResult.error) {
    console.error(bigintResult.error);
}
assert(bigintResult.value === 115792089183396302089269705419353877679230723318366275194376439045705909141818n);
Source

pub fn try_from_bigint(value: BigInt) -> Result<Float, FloatError>

Constructs a Float from a bigint equivalent of the fromHex() returned Float.

§Returns
  • Ok(Float) - The resulting Float value.
  • Err(FloatError) - If the conversion fails.
§Example
const floatResult = Float.tryFromBigint(115792089183396302089269705419353877679230723318366275194376439045705909141818n);
if (floatResult.error) {
  console.error(floatResult.error);
}
const value = float.value;
assert(value.asHex() === "0xfffffffe0000000000000000000000000000000000000000000000000000013a");
Source

pub fn from_fixed_decimal_js( value: BigInt, decimals: u8, ) -> Result<Float, FloatError>

Converts a fixed-point decimal value to a Float using the specified number of decimals.

§Arguments
  • value - The fixed-point decimal value as a string.
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok(Float) - The resulting Float value.
  • Err(FloatError) - If the conversion fails.
§Example
const floatResult = Float.fromFixedDecimal("12345", 2);
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
assert(float.format() === "123.45");
Source

pub fn to_fixed_decimal_js(&self, decimals: u8) -> Result<BigInt, FloatError>

Converts a Float to a fixed-point decimal value using the specified number of decimals.

§Arguments
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok(String) - The resulting fixed-point decimal value as a string.
  • Err(FloatError) - If the conversion fails.
§Example
const float = Float.parse("123.45").value!;
const result = float.toFixedDecimal(2);
if (result.error) {
   console.error(result.error);
}
assert(result.value === "12345");
Source

pub fn to_fixed_decimal_lossy_js( &self, decimals: u8, ) -> Result<ToFixedDecimalLossyResult, FloatError>

Converts a Float to a fixed-point decimal value using the specified number of decimals lossy.

§Returns

ToFixedDecimalLossyResult containing the value and lossless flag.

Source

pub fn parse_js(str: String) -> Result<Float, FloatError>

Parses a decimal string into a Float.

§Arguments
  • str - The string to parse.
§Returns
  • Ok(Float) - The parsed float.
  • Err(FloatError) - If parsing fails.
§Example
const floatResult = Float.parse("3.1415");
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
assert(float.format() === "3.1415");
Source

pub fn from_hex_js(hex: &str) -> Result<Float, FloatError>

Constructs a Float from a 32-byte hexadecimal string.

§Arguments
  • hex - The 32-byte hex string to parse.
§Returns
  • Ok(Float) - The float parsed from the hex string.
  • Err(FloatError) - If the hex string is not valid or not 32 bytes.
§Example
const floatResult = Float.fromHex("0x0000000000000000000000000000000000000000000000000000000000000005");
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
assert(float.asHex() === "0x0000000000000000000000000000000000000000000000000000000000000005");
Source

pub fn max_positive_value_js() -> Result<Float, FloatError>

Returns the maximum positive value that can be represented as a Float.

§Returns
  • Ok(Float) - The maximum positive value.
  • Err(FloatError) - If the EVM call fails.
§Example
const maxPosResult = Float.maxPositiveValue();
if (maxPosResult.error) {
   console.error(maxPosResult.error);
}
const maxPos = maxPosResult.value;
assert(!maxPos.format().error);
Source

pub fn min_positive_value_js() -> Result<Float, FloatError>

Returns the minimum positive value that can be represented as a Float.

§Returns
  • Ok(Float) - The minimum positive value.
  • Err(FloatError) - If the EVM call fails.
§Example
const minPosResult = Float.minPositiveValue();
if (minPosResult.error) {
   console.error(minPosResult.error);
}
const minPos = minPosResult.value;
assert(!minPos.format().error);
Source

pub fn max_negative_value_js() -> Result<Float, FloatError>

Returns the maximum negative value that can be represented as a Float.

§Returns
  • Ok(Float) - The maximum negative value (closest to zero).
  • Err(FloatError) - If the EVM call fails.
§Example
const maxNegResult = Float.maxNegativeValue();
if (maxNegResult.error) {
   console.error(maxNegResult.error);
}
const maxNeg = maxNegResult.value;
assert(!maxNeg.format().error);
Source

pub fn min_negative_value_js() -> Result<Float, FloatError>

Returns the minimum negative value that can be represented as a Float.

§Returns
  • Ok(Float) - The minimum negative value (furthest from zero).
  • Err(FloatError) - If the EVM call fails.
§Example
const minNegResult = Float.minNegativeValue();
if (minNegResult.error) {
   console.error(minNegResult.error);
}
const minNeg = minNegResult.value;
assert(!minNeg.format().error);
Source

pub fn zero_js() -> Result<Float, FloatError>

Returns the zero value of a Float in its maximized representation.

§Returns
  • Ok(Float) - The zero value.
  • Err(FloatError) - If the EVM call fails.
§Example
const zeroResult = Float.zero();
if (zeroResult.error) {
   console.error(zeroResult.error);
}
const zero = zeroResult.value;
assert(zero.isZero().value);
assert(zero.format().value === "0");
Source

pub fn format_default_scientific_min_js() -> Result<Float, FloatError>

Returns the default minimum value for scientific notation formatting (1e-4).

§Returns
  • Ok(Float) - The default minimum (1e-4).
  • Err(FloatError) - If the EVM call fails.
§Example
const minResult = Float.formatDefaultScientificMin();
if (minResult.error) {
   console.error(minResult.error);
}
const min = minResult.value;
assert(min.format().value === "0.0001");
Source

pub fn format_default_scientific_max_js() -> Result<Float, FloatError>

Returns the default maximum value for scientific notation formatting (1e9).

§Returns
  • Ok(Float) - The default maximum (1e9).
  • Err(FloatError) - If the EVM call fails.
§Example
const maxResult = Float.formatDefaultScientificMax();
if (maxResult.error) {
   console.error(maxResult.error);
}
const max = maxResult.value;
assert(max.format().value === "1000000000");
Source

pub fn format_js(&self) -> Result<String, FloatError>

Formats the float as a decimal string using default scientific notation range (1e-4 to 1e9).

§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
const floatResult = Float.parse("2.5");
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
const formatResult = float.format();
assert(formatResult.value === "2.5");
Source

pub fn format_with_scientific_js( &self, scientific: bool, ) -> Result<String, FloatError>

Formats the float as a decimal string with explicit scientific notation control.

§Arguments
  • scientific - If true, always use scientific notation. If false, use decimal notation.
§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
const float = Float.parse("123.456").value!;

const decResult = float.formatWithScientific(false);
assert(decResult.value === "123.456");

const sciResult = float.formatWithScientific(true);
assert(sciResult.value === "1.23456e2");
Source

pub fn format_with_range_js( &self, scientific_min: &Self, scientific_max: &Self, ) -> Result<String, FloatError>

Formats the float as a decimal string with a custom scientific notation range.

§Arguments
  • scientific_min - Values smaller than this (in absolute value) use scientific notation.
  • scientific_max - Values larger than this (in absolute value) use scientific notation.
§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
const float = Float.parse("0.5").value!;
const min = Float.parse("1").value!;
const max = Float.parse("100").value!;
const result = float.formatWithRange(min, max);
assert(result.value === "5e-1");
Source

pub fn lt_js(&self, b: &Self) -> Result<bool, FloatError>

Returns true if self is less than b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is less than b.
  • Ok(false) if self is not less than b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.lt(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn eq_js(&self, b: &Self) -> Result<bool, FloatError>

Returns true if self is equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is equal to b.
  • Ok(false) if self is not equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("2.0").value!;
const result = a.eq(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn lte_js(&self, b: &Self) -> Result<bool, FloatError>

Returns true if self is less than or equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is less than or equal to b.
  • Ok(false) if self is not less than or equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.lte(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn gte_js(&self, b: &Self) -> Result<bool, FloatError>

Returns true if self is greater than or equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is greater than or equal to b.
  • Ok(false) if self is not greater than or equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("1.0").value!;
const result = a.gte(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn gt_js(&self, b: &Self) -> Result<bool, FloatError>

Returns true if self is greater than b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is greater than b.
  • Ok(false) if self is not greater than b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("1.0").value!;
const result = a.gt(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn inv_js(&self) -> Result<Float, FloatError>

Returns the multiplicative inverse of the float.

§Returns
  • Ok(Float) - The inverse.
  • Err(FloatError) - If inversion fails.
§Example
const x = Float.parse("2.0").value!;
const inv = x.inv();
if (inv.error) {
   console.error(inv.error);
}
assert(inv.value.format().startsWith("0.5"));
Source

pub fn abs_js(&self) -> Result<Float, FloatError>

Returns the absolute value of the float.

§Returns
  • Ok(Float) - The absolute value.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("-3.14").value!;
const abs = x.abs();
if (abs.error) {
   console.error(abs.error);
}
assert(abs.value.format() === "3.14");
Source

pub fn add_js(&self, b: &Self) -> Result<Float, FloatError>

Adds two floats.

§Returns
  • Ok(Float) - The sum.
  • Err(FloatError) - If addition fails.
§Example
const a = Float.parse("1.5").value!;
const b = Float.parse("2.5").value!;
const result = a.add(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "4");
Source

pub fn sub_js(&self, b: &Self) -> Result<Float, FloatError>

Subtracts b from self.

§Returns
  • Ok(Float) - The difference.
  • Err(FloatError) - If subtraction fails.
§Example
const a = Float.parse("5.0").value!;
const b = Float.parse("2.0").value!;
const result = a.sub(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "3");
Source

pub fn mul_js(&self, b: &Self) -> Result<Float, FloatError>

Multiplies two floats.

§Returns
  • Ok(Float) - The product.
  • Err(FloatError) - If multiplication fails.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("3.0").value!;
const result = a.mul(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "6");
Source

pub fn div_js(&self, b: &Self) -> Result<Float, FloatError>

Divides self by b.

§Returns
  • Ok(Float) - The quotient.
  • Err(FloatError) - If division fails.
§Example
const a = Float.parse("6.0").value!;
const b = Float.parse("2.0").value!;
const result = a.div(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "3");
Source

pub fn frac_js(&self) -> Result<Float, FloatError>

Returns the fractional part of the float.

§Returns
  • Ok(Float) - The fractional part.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("3.75").value!;
const result = x.frac();
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "0.75");
Source

pub fn floor_js(&self) -> Result<Float, FloatError>

Returns the floor of the float.

§Returns
  • Ok(Float) - The floored value.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("3.75").value!;
const result = x.floor();
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "3");
Source

pub fn min_js(&self, b: &Self) -> Result<Float, FloatError>

Returns the minimum of self and b.

§Arguments
  • b - The other Float to compare with.
§Returns
  • Ok(Float) - The minimum value.
  • Err(FloatError) - If the operation fails.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.min(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "1");
Source

pub fn max_js(&self, b: &Self) -> Result<Float, FloatError>

Returns the maximum of self and b.

§Arguments
  • b - The other Float to compare with.
§Returns
  • Ok(Float) - The maximum value.
  • Err(FloatError) - If the operation fails.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.max(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "2");
Source

pub fn is_zero_js(&self) -> Result<bool, FloatError>

Checks if the float is zero.

§Returns
  • Ok(true) if the float is zero.
  • Ok(false) if the float is not zero.
  • Err(FloatError) if the operation fails.
§Example
const zero = Float.parse("0").value!;
const result = zero.isZero();
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn neg_js(&self) -> Result<Float, FloatError>

Returns the negation of the float.

§Returns
  • Ok(Float) - The negated value.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("3.14").value!;
const result = x.neg();
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "-3.14");
Source§

impl Float

Source

pub fn try_to_bigint__wasm_export(&self) -> JsValue

Tries to convert the float to a JS/TS bigint equivalent of asHex() returned hex string.

§Returns
  • Ok(bigint) - The resulting bigint value.
  • Err(FloatError) - If the conversion fails.
§Example
const float = Float.fromHex("0xfffffffe0000000000000000000000000000000000000000000000000000013a");
const bigintResult = float.tryToBigInt();
if (bigintResult.error) {
    console.error(bigintResult.error);
}
assert(bigintResult.value === 115792089183396302089269705419353877679230723318366275194376439045705909141818n);
Source

pub fn try_from_bigint__wasm_export(value: BigInt) -> JsValue

Constructs a Float from a bigint equivalent of the fromHex() returned Float.

§Returns
  • Ok(Float) - The resulting Float value.
  • Err(FloatError) - If the conversion fails.
§Example
const floatResult = Float.tryFromBigint(115792089183396302089269705419353877679230723318366275194376439045705909141818n);
if (floatResult.error) {
  console.error(floatResult.error);
}
const value = float.value;
assert(value.asHex() === "0xfffffffe0000000000000000000000000000000000000000000000000000013a");
Source

pub fn from_fixed_decimal_js__wasm_export( value: BigInt, decimals: u8, ) -> JsValue

Converts a fixed-point decimal value to a Float using the specified number of decimals.

§Arguments
  • value - The fixed-point decimal value as a string.
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok(Float) - The resulting Float value.
  • Err(FloatError) - If the conversion fails.
§Example
const floatResult = Float.fromFixedDecimal("12345", 2);
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
assert(float.format() === "123.45");
Source

pub fn to_fixed_decimal_js__wasm_export(&self, decimals: u8) -> JsValue

Converts a Float to a fixed-point decimal value using the specified number of decimals.

§Arguments
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok(String) - The resulting fixed-point decimal value as a string.
  • Err(FloatError) - If the conversion fails.
§Example
const float = Float.parse("123.45").value!;
const result = float.toFixedDecimal(2);
if (result.error) {
   console.error(result.error);
}
assert(result.value === "12345");
Source

pub fn to_fixed_decimal_lossy_js__wasm_export(&self, decimals: u8) -> JsValue

Converts a Float to a fixed-point decimal value using the specified number of decimals lossy.

§Returns

ToFixedDecimalLossyResult containing the value and lossless flag.

Source

pub fn parse_js__wasm_export(str: String) -> JsValue

Parses a decimal string into a Float.

§Arguments
  • str - The string to parse.
§Returns
  • Ok(Float) - The parsed float.
  • Err(FloatError) - If parsing fails.
§Example
const floatResult = Float.parse("3.1415");
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
assert(float.format() === "3.1415");
Source

pub fn from_hex_js__wasm_export(hex: &str) -> JsValue

Constructs a Float from a 32-byte hexadecimal string.

§Arguments
  • hex - The 32-byte hex string to parse.
§Returns
  • Ok(Float) - The float parsed from the hex string.
  • Err(FloatError) - If the hex string is not valid or not 32 bytes.
§Example
const floatResult = Float.fromHex("0x0000000000000000000000000000000000000000000000000000000000000005");
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
assert(float.asHex() === "0x0000000000000000000000000000000000000000000000000000000000000005");
Source

pub fn max_positive_value_js__wasm_export() -> JsValue

Returns the maximum positive value that can be represented as a Float.

§Returns
  • Ok(Float) - The maximum positive value.
  • Err(FloatError) - If the EVM call fails.
§Example
const maxPosResult = Float.maxPositiveValue();
if (maxPosResult.error) {
   console.error(maxPosResult.error);
}
const maxPos = maxPosResult.value;
assert(!maxPos.format().error);
Source

pub fn min_positive_value_js__wasm_export() -> JsValue

Returns the minimum positive value that can be represented as a Float.

§Returns
  • Ok(Float) - The minimum positive value.
  • Err(FloatError) - If the EVM call fails.
§Example
const minPosResult = Float.minPositiveValue();
if (minPosResult.error) {
   console.error(minPosResult.error);
}
const minPos = minPosResult.value;
assert(!minPos.format().error);
Source

pub fn max_negative_value_js__wasm_export() -> JsValue

Returns the maximum negative value that can be represented as a Float.

§Returns
  • Ok(Float) - The maximum negative value (closest to zero).
  • Err(FloatError) - If the EVM call fails.
§Example
const maxNegResult = Float.maxNegativeValue();
if (maxNegResult.error) {
   console.error(maxNegResult.error);
}
const maxNeg = maxNegResult.value;
assert(!maxNeg.format().error);
Source

pub fn min_negative_value_js__wasm_export() -> JsValue

Returns the minimum negative value that can be represented as a Float.

§Returns
  • Ok(Float) - The minimum negative value (furthest from zero).
  • Err(FloatError) - If the EVM call fails.
§Example
const minNegResult = Float.minNegativeValue();
if (minNegResult.error) {
   console.error(minNegResult.error);
}
const minNeg = minNegResult.value;
assert(!minNeg.format().error);
Source

pub fn zero_js__wasm_export() -> JsValue

Returns the zero value of a Float in its maximized representation.

§Returns
  • Ok(Float) - The zero value.
  • Err(FloatError) - If the EVM call fails.
§Example
const zeroResult = Float.zero();
if (zeroResult.error) {
   console.error(zeroResult.error);
}
const zero = zeroResult.value;
assert(zero.isZero().value);
assert(zero.format().value === "0");
Source

pub fn format_default_scientific_min_js__wasm_export() -> JsValue

Returns the default minimum value for scientific notation formatting (1e-4).

§Returns
  • Ok(Float) - The default minimum (1e-4).
  • Err(FloatError) - If the EVM call fails.
§Example
const minResult = Float.formatDefaultScientificMin();
if (minResult.error) {
   console.error(minResult.error);
}
const min = minResult.value;
assert(min.format().value === "0.0001");
Source

pub fn format_default_scientific_max_js__wasm_export() -> JsValue

Returns the default maximum value for scientific notation formatting (1e9).

§Returns
  • Ok(Float) - The default maximum (1e9).
  • Err(FloatError) - If the EVM call fails.
§Example
const maxResult = Float.formatDefaultScientificMax();
if (maxResult.error) {
   console.error(maxResult.error);
}
const max = maxResult.value;
assert(max.format().value === "1000000000");
Source

pub fn format_js__wasm_export(&self) -> WasmEncodedResult<String>

Formats the float as a decimal string using default scientific notation range (1e-4 to 1e9).

§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
const floatResult = Float.parse("2.5");
if (floatResult.error) {
   console.error(floatResult.error);
}
const float = floatResult.value;
const formatResult = float.format();
assert(formatResult.value === "2.5");
Source

pub fn format_with_scientific_js__wasm_export( &self, scientific: bool, ) -> WasmEncodedResult<String>

Formats the float as a decimal string with explicit scientific notation control.

§Arguments
  • scientific - If true, always use scientific notation. If false, use decimal notation.
§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
const float = Float.parse("123.456").value!;

const decResult = float.formatWithScientific(false);
assert(decResult.value === "123.456");

const sciResult = float.formatWithScientific(true);
assert(sciResult.value === "1.23456e2");
Source

pub fn format_with_range_js__wasm_export( &self, scientific_min: &Self, scientific_max: &Self, ) -> WasmEncodedResult<String>

Formats the float as a decimal string with a custom scientific notation range.

§Arguments
  • scientific_min - Values smaller than this (in absolute value) use scientific notation.
  • scientific_max - Values larger than this (in absolute value) use scientific notation.
§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
const float = Float.parse("0.5").value!;
const min = Float.parse("1").value!;
const max = Float.parse("100").value!;
const result = float.formatWithRange(min, max);
assert(result.value === "5e-1");
Source

pub fn lt_js__wasm_export(&self, b: &Self) -> WasmEncodedResult<bool>

Returns true if self is less than b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is less than b.
  • Ok(false) if self is not less than b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.lt(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn eq_js__wasm_export(&self, b: &Self) -> WasmEncodedResult<bool>

Returns true if self is equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is equal to b.
  • Ok(false) if self is not equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("2.0").value!;
const result = a.eq(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn lte_js__wasm_export(&self, b: &Self) -> WasmEncodedResult<bool>

Returns true if self is less than or equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is less than or equal to b.
  • Ok(false) if self is not less than or equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.lte(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn gte_js__wasm_export(&self, b: &Self) -> WasmEncodedResult<bool>

Returns true if self is greater than or equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is greater than or equal to b.
  • Ok(false) if self is not greater than or equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("1.0").value!;
const result = a.gte(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn gt_js__wasm_export(&self, b: &Self) -> WasmEncodedResult<bool>

Returns true if self is greater than b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is greater than b.
  • Ok(false) if self is not greater than b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("1.0").value!;
const result = a.gt(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn inv_js__wasm_export(&self) -> JsValue

Returns the multiplicative inverse of the float.

§Returns
  • Ok(Float) - The inverse.
  • Err(FloatError) - If inversion fails.
§Example
const x = Float.parse("2.0").value!;
const inv = x.inv();
if (inv.error) {
   console.error(inv.error);
}
assert(inv.value.format().startsWith("0.5"));
Source

pub fn abs_js__wasm_export(&self) -> JsValue

Returns the absolute value of the float.

§Returns
  • Ok(Float) - The absolute value.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("-3.14").value!;
const abs = x.abs();
if (abs.error) {
   console.error(abs.error);
}
assert(abs.value.format() === "3.14");
Source

pub fn add_js__wasm_export(&self, b: &Self) -> JsValue

Adds two floats.

§Returns
  • Ok(Float) - The sum.
  • Err(FloatError) - If addition fails.
§Example
const a = Float.parse("1.5").value!;
const b = Float.parse("2.5").value!;
const result = a.add(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "4");
Source

pub fn sub_js__wasm_export(&self, b: &Self) -> JsValue

Subtracts b from self.

§Returns
  • Ok(Float) - The difference.
  • Err(FloatError) - If subtraction fails.
§Example
const a = Float.parse("5.0").value!;
const b = Float.parse("2.0").value!;
const result = a.sub(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "3");
Source

pub fn mul_js__wasm_export(&self, b: &Self) -> JsValue

Multiplies two floats.

§Returns
  • Ok(Float) - The product.
  • Err(FloatError) - If multiplication fails.
§Example
const a = Float.parse("2.0").value!;
const b = Float.parse("3.0").value!;
const result = a.mul(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "6");
Source

pub fn div_js__wasm_export(&self, b: &Self) -> JsValue

Divides self by b.

§Returns
  • Ok(Float) - The quotient.
  • Err(FloatError) - If division fails.
§Example
const a = Float.parse("6.0").value!;
const b = Float.parse("2.0").value!;
const result = a.div(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "3");
Source

pub fn frac_js__wasm_export(&self) -> JsValue

Returns the fractional part of the float.

§Returns
  • Ok(Float) - The fractional part.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("3.75").value!;
const result = x.frac();
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "0.75");
Source

pub fn floor_js__wasm_export(&self) -> JsValue

Returns the floor of the float.

§Returns
  • Ok(Float) - The floored value.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("3.75").value!;
const result = x.floor();
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "3");
Source

pub fn min_js__wasm_export(&self, b: &Self) -> JsValue

Returns the minimum of self and b.

§Arguments
  • b - The other Float to compare with.
§Returns
  • Ok(Float) - The minimum value.
  • Err(FloatError) - If the operation fails.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.min(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "1");
Source

pub fn max_js__wasm_export(&self, b: &Self) -> JsValue

Returns the maximum of self and b.

§Arguments
  • b - The other Float to compare with.
§Returns
  • Ok(Float) - The maximum value.
  • Err(FloatError) - If the operation fails.
§Example
const a = Float.parse("1.0").value!;
const b = Float.parse("2.0").value!;
const result = a.max(b);
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "2");
Source

pub fn is_zero_js__wasm_export(&self) -> WasmEncodedResult<bool>

Checks if the float is zero.

§Returns
  • Ok(true) if the float is zero.
  • Ok(false) if the float is not zero.
  • Err(FloatError) if the operation fails.
§Example
const zero = Float.parse("0").value!;
const result = zero.isZero();
if (result.error) {
   console.error(result.error);
}
assert(result.value);
Source

pub fn neg_js__wasm_export(&self) -> JsValue

Returns the negation of the float.

§Returns
  • Ok(Float) - The negated value.
  • Err(FloatError) - If the operation fails.
§Example
const x = Float.parse("3.14").value!;
const result = x.neg();
if (result.error) {
   console.error(result.error);
}
assert(result.value.format() === "-3.14");
Source§

impl Float

Source

pub const fn from_raw(value: B256) -> Self

Creates a new Float from the given 32-byte value B256.

Source

pub fn get_inner(&self) -> B256

Getter for inner 32-bytes value of this Float instance as B256.

Source

pub fn set_inner(&mut self, value: B256)

Sets the inner 32-byte value of this float from the given B256.

Source

pub fn from_fixed_decimal(value: U256, decimals: u8) -> Result<Self, FloatError>

Converts a fixed-point decimal value to a Float using the specified number of decimals.

§Arguments
  • value - The fixed-point decimal value as a U256.
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok(Float) - The resulting Float value.
  • Err(FloatError) - If the conversion fails.
§Example
use rain_math_float::Float;
use alloy::primitives::U256;

// 123.45 with 2 decimals is represented as 12345
let value = U256::from(12345u64);
let decimals = 2u8;
let float = Float::from_fixed_decimal(value, decimals)?;
assert_eq!(float.format()?, "123.45");

anyhow::Ok(())
Source

pub fn to_fixed_decimal(self, decimals: u8) -> Result<U256, FloatError>

Converts a Float to a fixed-point decimal value using the specified number of decimals.

§Arguments
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok(U256) - The resulting fixed-point decimal value.
  • Err(FloatError) - If the conversion fails.
§Example
use rain_math_float::Float;
use alloy::primitives::U256;

// 123.45 with 2 decimals becomes 12345
let float = Float::parse("123.45".to_string())?;
let fixed = float.to_fixed_decimal(2)?;
assert_eq!(fixed, U256::from(12345u64));

anyhow::Ok(())
Source

pub fn from_fixed_decimal_lossy( value: U256, decimals: u8, ) -> Result<(Self, bool), FloatError>

Converts a fixed-point decimal value to a Float using the specified number of decimals lossy.

§Arguments
  • value - The fixed-point decimal value as a U256.
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok((Float, bool)) - The resulting Float value and a boolean indicating if the conversion was lossless.
  • Err(FloatError) - If the conversion fails.
§Example
use rain_math_float::Float;
use alloy::primitives::U256;

// 123.45 with 2 decimals is represented as 12345
let value = U256::from(12345u64);
let decimals = 2u8;
let (float, lossless) = Float::from_fixed_decimal_lossy(value, decimals)?;
assert_eq!(float.format()?, "123.45");
assert!(lossless);

anyhow::Ok(())
Source

pub fn to_fixed_decimal_lossy( self, decimals: u8, ) -> Result<(U256, bool), FloatError>

Converts a Float to a fixed-point decimal value using the specified number of decimals lossy.

§Arguments
  • decimals - The number of decimals in the fixed-point representation.
§Returns
  • Ok((U256, bool)) - The resulting fixed-point decimal value and a boolean indicating if the conversion was lossless.
  • Err(FloatError) - If the conversion fails.
§Example
use rain_math_float::Float;
use alloy::primitives::U256;

// 123.45 with 2 decimals becomes 12345
let float = Float::from_fixed_decimal(U256::from(12345), 3)?;
let (fixed, lossless) = float.to_fixed_decimal_lossy(2)?;
assert_eq!(fixed, U256::from(1234u64));
assert!(!lossless);

anyhow::Ok(())
Source

pub fn parse(str: String) -> Result<Self, FloatError>

Parses a decimal string into a Float.

§Arguments
  • str - The string to parse.
§Returns
  • Ok(Float) - The parsed float.
  • Err(FloatError) - If parsing fails.
§Example
use rain_math_float::Float;

let float = Float::parse("3.1415".to_string())?;
assert_eq!(float.format()?, "3.1415");

anyhow::Ok(())
Source

pub fn as_hex(self) -> String

Returns the 32-byte hexadecimal string representation of the float.

§Returns
  • String - The 32-byte hex string.
§Example
use rain_math_float::Float;
let float = Float::from_hex("0x0000000000000000000000000000000000000000000000000000000000000005").unwrap();
assert_eq!(float.as_hex(), "0x0000000000000000000000000000000000000000000000000000000000000005");
Source

pub fn from_hex(hex: &str) -> Result<Self, FloatError>

Constructs a Float from a 32-byte hexadecimal string.

§Arguments
  • hex - The 32-byte hex string to parse.
§Returns
  • Ok(Float) - The float parsed from the hex string.
  • Err(FloatError) - If the hex string is not valid or not 32 bytes.
§Example
use rain_math_float::Float;
let float = Float::from_hex("0x0000000000000000000000000000000000000000000000000000000000000005")?;
assert_eq!(float.as_hex(), "0x0000000000000000000000000000000000000000000000000000000000000005");
anyhow::Ok(())
Source

pub fn max_positive_value() -> Result<Self, FloatError>

Returns the maximum positive value that can be represented as a Float.

§Returns
  • Ok(Float) - The maximum positive value.
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let max_pos = Float::max_positive_value()?;
let zero = Float::parse("0".to_string())?;

// Max positive is greater than zero
assert!(max_pos.gt(zero)?);

// Max positive is greater than any normal large number
let big_number = Float::parse("999999999999999999999".to_string())?;
assert!(max_pos.gt(big_number)?);

anyhow::Ok(())
Source

pub fn min_positive_value() -> Result<Self, FloatError>

Returns the minimum positive value that can be represented as a Float.

§Returns
  • Ok(Float) - The minimum positive value.
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let min_pos = Float::min_positive_value()?;
let zero = Float::parse("0".to_string())?;

// Min positive is greater than zero but smaller than any other positive number
assert!(min_pos.gt(zero)?);

let small_number = Float::parse("0.000000000000000001".to_string())?;
assert!(min_pos.lt(small_number)?);

anyhow::Ok(())
Source

pub fn max_negative_value() -> Result<Self, FloatError>

Returns the maximum negative value that can be represented as a Float.

§Returns
  • Ok(Float) - The maximum negative value (closest to zero).
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let max_neg = Float::max_negative_value()?;
let zero = Float::parse("0".to_string())?;

// Max negative is less than zero but greater than any other negative number
assert!(max_neg.lt(zero)?);

let small_negative = Float::parse("-0.000000000000000001".to_string())?;
assert!(max_neg.gt(small_negative)?);

anyhow::Ok(())
Source

pub fn min_negative_value() -> Result<Self, FloatError>

Returns the minimum negative value that can be represented as a Float.

§Returns
  • Ok(Float) - The minimum negative value (furthest from zero).
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let min_neg = Float::min_negative_value()?;
let zero = Float::parse("0".to_string())?;

// Min negative is less than zero
assert!(min_neg.lt(zero)?);

// Min negative is less than any normal negative number
let big_negative = Float::parse("-999999999999999999999".to_string())?;
assert!(min_neg.lt(big_negative)?);

anyhow::Ok(())
Source

pub fn zero() -> Result<Self, FloatError>

Returns the zero value of a Float in its maximized representation.

§Returns
  • Ok(Float) - The zero value.
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let zero = Float::zero()?;
assert!(zero.is_zero()?);
assert_eq!(zero.format()?, "0");

// Should be equal to parsed zero
let parsed_zero = Float::parse("0".to_string())?;
assert!(zero.eq(parsed_zero)?);

anyhow::Ok(())
Source

pub fn format_default_scientific_min() -> Result<Self, FloatError>

Returns the default minimum value for scientific notation formatting (1e-4).

Values smaller than this (in absolute value) will be formatted in scientific notation.

§Returns
  • Ok(Float) - The default minimum (1e-4).
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let min = Float::format_default_scientific_min()?;
assert_eq!(min.format()?, "0.0001");

anyhow::Ok(())
Source

pub fn format_default_scientific_max() -> Result<Self, FloatError>

Returns the default maximum value for scientific notation formatting (1e9).

Values larger than this (in absolute value) will be formatted in scientific notation.

§Returns
  • Ok(Float) - The default maximum (1e9).
  • Err(FloatError) - If the EVM call fails.
§Example
use rain_math_float::Float;

let max = Float::format_default_scientific_max()?;
assert_eq!(max.format()?, "1000000000");

anyhow::Ok(())
Source

pub fn format(self) -> Result<String, FloatError>

Formats the float as a decimal string using default scientific notation range (1e-4 to 1e9).

Values within the range [1e-4, 1e9] will use decimal notation. Values outside this range will use scientific notation.

§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Examples

Values within the default range use decimal notation:

use rain_math_float::Float;

// At the boundaries (inclusive)
assert_eq!(Float::parse("0.0001".to_string())?.format()?, "0.0001");  // 1e-4
assert_eq!(Float::parse("1000000000".to_string())?.format()?, "1000000000");  // 1e9

// Within range
assert_eq!(Float::parse("2.5".to_string())?.format()?, "2.5");
assert_eq!(Float::parse("123.456".to_string())?.format()?, "123.456");
assert_eq!(Float::parse("0.001".to_string())?.format()?, "0.001");
assert_eq!(Float::parse("1000000".to_string())?.format()?, "1000000");

anyhow::Ok(())

Values outside the default range use scientific notation:

use rain_math_float::Float;

// Smaller than 1e-4
assert_eq!(Float::parse("0.00001".to_string())?.format()?, "1e-5");
assert_eq!(Float::parse("0.000001".to_string())?.format()?, "1e-6");

// Larger than 1e9
assert_eq!(Float::parse("10000000000".to_string())?.format()?, "1e10");
assert_eq!(Float::parse("123000000000".to_string())?.format()?, "1.23e11");

anyhow::Ok(())
Source

pub fn format_with_scientific( self, scientific: bool, ) -> Result<String, FloatError>

Formats the float as a decimal string with explicit scientific notation control.

§Arguments
  • scientific - If true, always use scientific notation. If false, use decimal notation.
§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
use rain_math_float::Float;

let float = Float::parse("3.14".to_string())?;
assert_eq!(float.format_with_scientific(false)?, "3.14");
assert_eq!(float.format_with_scientific(true)?, "3.14");

anyhow::Ok(())
Source

pub fn format_with_range( self, scientific_min: Self, scientific_max: Self, ) -> Result<String, FloatError>

Formats the float as a decimal string with a custom scientific notation range.

§Arguments
  • scientific_min - Values smaller than this (in absolute value) use scientific notation.
  • scientific_max - Values larger than this (in absolute value) use scientific notation.
§Returns
  • Ok(String) - The formatted string.
  • Err(FloatError) - If formatting fails.
§Example
use rain_math_float::Float;

let float = Float::parse("0.001".to_string())?;
let min = Float::parse("0.01".to_string())?;
let max = Float::parse("100".to_string())?;
assert_eq!(float.format_with_range(min, max)?, "1e-3");

anyhow::Ok(())
Source

pub fn lt(self, b: Self) -> Result<bool, FloatError>

Returns true if self is less than b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is less than b.
  • Ok(false) if self is not less than b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
use rain_math_float::Float;

let a = Float::parse("1.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
assert!(a.lt(b)?);

anyhow::Ok(())
Source

pub fn eq(self, b: Self) -> Result<bool, FloatError>

Returns true if self is equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is equal to b.
  • Ok(false) if self is not equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
use rain_math_float::Float;

let a = Float::parse("3.14".to_string())?;
let b = Float::parse("3.14".to_string())?;
assert!(a.eq(b)?);

anyhow::Ok(())
Source

pub fn gt(self, b: Self) -> Result<bool, FloatError>

Returns true if self is greater than b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is greater than b.
  • Ok(false) if self is not greater than b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
use rain_math_float::Float;

let a = Float::parse("5.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
assert!(a.gt(b)?);

anyhow::Ok(())
Source

pub fn inv(self) -> Result<Self, FloatError>

Returns the multiplicative inverse of the float.

§Returns
  • Ok(Float) - The inverse.
  • Err(FloatError) - If inversion fails.
§Example
use rain_math_float::Float;

let x = Float::parse("2.0".to_string())?;
let inv = x.inv()?;
assert!(inv.format()?.starts_with("0.5"));

anyhow::Ok(())
Source

pub fn abs(self) -> Result<Float, FloatError>

Returns the absolute value of the float.

§Returns
  • Ok(Float) - The absolute value.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let x = Float::parse("-3.14".to_string())?;
let abs = x.abs()?;
assert_eq!(abs.format()?, "3.14");

anyhow::Ok(())
Source

pub fn lte(self, b: Self) -> Result<bool, FloatError>

Returns true if self is less than or equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is less than or equal to b.
  • Ok(false) if self is not less than or equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
use rain_math_float::Float;

let a = Float::parse("1.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
assert!(a.lte(b)?);

anyhow::Ok(())
Source

pub fn gte(self, b: Self) -> Result<bool, FloatError>

Returns true if self is greater than or equal to b.

§Arguments
  • b - The Float value to compare with self.
§Returns
  • Ok(true) if self is greater than or equal to b.
  • Ok(false) if self is not greater than or equal to b.
  • Err(FloatError) if the comparison fails due to an error in the underlying EVM call or decoding.
§Example
use rain_math_float::Float;

let a = Float::parse("2.0".to_string())?;
let b = Float::parse("1.0".to_string())?;
assert!(a.gte(b)?);

anyhow::Ok(())
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impl Float

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pub fn integer(self) -> Result<Float, FloatError>

Returns the integer part of the float (truncation toward zero).

§Returns
  • Ok(Float) - The integer part.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let x = Float::parse("3.75".to_string())?;
let int = x.integer()?;
assert_eq!(int.format()?, "3");

let y = Float::parse("-3.75".to_string())?;
let int_y = y.integer()?;
assert_eq!(int_y.format()?, "-3");

anyhow::Ok(())
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pub fn frac(self) -> Result<Float, FloatError>

Returns the fractional part of the float.

§Returns
  • Ok(Float) - The fractional part.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let x = Float::parse("3.75".to_string())?;
let frac = x.frac()?;
assert_eq!(frac.format()?, "0.75");

anyhow::Ok(())
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pub fn floor(self) -> Result<Float, FloatError>

Returns the floor of the float.

§Returns
  • Ok(Float) - The floored value.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let x = Float::parse("3.75".to_string())?;
let floor = x.floor()?;
assert_eq!(floor.format()?, "3");

anyhow::Ok(())
Source

pub fn min(self, b: Self) -> Result<Self, FloatError>

Returns the minimum of self and b.

§Arguments
  • b - The other Float to compare with.
§Returns
  • Ok(Float) - The minimum value.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let a = Float::parse("1.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
let min = a.min(b)?;
assert_eq!(min.format()?, "1");

anyhow::Ok(())
Source

pub fn max(self, b: Self) -> Result<Self, FloatError>

Returns the maximum of self and b.

§Arguments
  • b - The other Float to compare with.
§Returns
  • Ok(Float) - The maximum value.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let a = Float::parse("1.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
let max = a.max(b)?;
assert_eq!(max.format()?, "2");

anyhow::Ok(())
Source

pub fn is_zero(self) -> Result<bool, FloatError>

Checks if the float is zero.

§Returns
  • Ok(true) if the float is zero.
  • Ok(false) if the float is not zero.
  • Err(FloatError) if the operation fails.
§Example
use rain_math_float::Float;

let zero = Float::parse("0".to_string())?;
assert!(zero.is_zero()?);
let nonzero = Float::parse("1.23".to_string())?;
assert!(!nonzero.is_zero()?);

anyhow::Ok(())

Trait Implementations§

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impl Add for Float

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fn add(self, b: Self) -> Self::Output

Adds two floats.

§Returns
  • Ok(Float) - The sum.
  • Err(FloatError) - If addition fails.
§Example
use rain_math_float::Float;

let a = Float::parse("1.5".to_string())?;
let b = Float::parse("2.5".to_string())?;
let sum = (a + b)?;
assert_eq!(sum.format()?, "4");

anyhow::Ok(())
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type Output = Result<Float, FloatError>

The resulting type after applying the + operator.
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impl Clone for Float

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fn clone(&self) -> Float

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Float

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for Float

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fn default() -> Float

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for Float

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Div for Float

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fn div(self, b: Self) -> Self::Output

Divides self by b.

§Returns
  • Ok(Float) - The quotient.
  • Err(FloatError) - If division fails.
§Example
use rain_math_float::Float;

let a = Float::parse("6.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
let quotient = (a / b)?;
assert_eq!(quotient.format()?, "3");

anyhow::Ok(())
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type Output = Result<Float, FloatError>

The resulting type after applying the / operator.
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impl From<FixedBytes<32>> for Float

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fn from(value: B256) -> Self

Converts to this type from the input type.
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impl From<Float> for B256

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fn from(value: Float) -> Self

Converts to this type from the input type.
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impl From<Float> for JsValue

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fn from(value: Float) -> Self

Converts to this type from the input type.
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impl FromWasmAbi for Float

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type Abi = u32

The Wasm ABI type that this converts from when coming back out from the ABI boundary.
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unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi. Read more
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impl Hash for Float

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl IntoWasmAbi for Float

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type Abi = u32

The Wasm ABI type that this converts into when crossing the ABI boundary.
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fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.
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impl LongRefFromWasmAbi for Float

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type Abi = u32

Same as RefFromWasmAbi::Abi
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type Anchor = RcRef<Float>

Same as RefFromWasmAbi::Anchor
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unsafe fn long_ref_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi
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impl Mul for Float

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fn mul(self, b: Self) -> Self::Output

Multiplies two floats.

§Returns
  • Ok(Float) - The product.
  • Err(FloatError) - If multiplication fails.
§Example
use rain_math_float::Float;

let a = Float::parse("2.0".to_string())?;
let b = Float::parse("3.0".to_string())?;
let product = (a * b)?;
assert_eq!(product.format()?, "6");

anyhow::Ok(())
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type Output = Result<Float, FloatError>

The resulting type after applying the * operator.
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impl Neg for Float

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fn neg(self) -> Self::Output

Returns the negation of the float.

§Returns
  • Ok(Float) - The negated value.
  • Err(FloatError) - If the operation fails.
§Example
use rain_math_float::Float;

let x = Float::parse("3.14".to_string())?;
let neg = (-x)?;
assert_eq!(neg.format()?, "-3.14");

anyhow::Ok(())
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type Output = Result<Float, FloatError>

The resulting type after applying the - operator.
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impl OptionFromWasmAbi for Float

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fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.
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impl OptionIntoWasmAbi for Float

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fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option. Read more
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impl RefFromWasmAbi for Float

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type Abi = u32

The Wasm ABI type references to Self are recovered from.
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type Anchor = RcRef<Float>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.
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unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi. Read more
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impl RefMutFromWasmAbi for Float

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type Abi = u32

Same as RefFromWasmAbi::Abi
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type Anchor = RcRefMut<Float>

Same as RefFromWasmAbi::Anchor
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unsafe fn ref_mut_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi
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impl Serialize for Float

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Sub for Float

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fn sub(self, b: Self) -> Self::Output

Subtracts b from self.

§Returns
  • Ok(Float) - The difference.
  • Err(FloatError) - If subtraction fails.
§Example
use rain_math_float::Float;

let a = Float::parse("5.0".to_string())?;
let b = Float::parse("2.0".to_string())?;
let diff = (a - b)?;
assert_eq!(diff.format()?, "3");

anyhow::Ok(())
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type Output = Result<Float, FloatError>

The resulting type after applying the - operator.
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impl TryFromJsValue for Float

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type Error = JsValue

The type returned in the event of a conversion error.
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fn try_from_js_value(value: JsValue) -> Result<Self, Self::Error>

Performs the conversion.
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impl VectorFromWasmAbi for Float

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type Abi = <Box<[JsValue]> as FromWasmAbi>::Abi

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unsafe fn vector_from_abi(js: Self::Abi) -> Box<[Float]>

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impl VectorIntoJsValue for Float

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fn vector_into_jsvalue(vector: Box<[Float]>) -> JsValue

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impl VectorIntoWasmAbi for Float

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type Abi = <Box<[JsValue]> as IntoWasmAbi>::Abi

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fn vector_into_abi(vector: Box<[Float]>) -> Self::Abi

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impl WasmDescribe for Float

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fn describe()

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impl WasmDescribeVector for Float

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fn describe_vector()

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impl Copy for Float

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impl SupportsConstructor for Float

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impl SupportsInstanceProperty for Float

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impl SupportsStaticProperty for Float

Auto Trait Implementations§

§

impl Freeze for Float

§

impl RefUnwindSafe for Float

§

impl Send for Float

§

impl Sync for Float

§

impl Unpin for Float

§

impl UnsafeUnpin for Float

§

impl UnwindSafe for Float

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pipe for T
where T: ?Sized,

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
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fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> ReturnWasmAbi for T
where T: IntoWasmAbi,

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type Abi = <T as IntoWasmAbi>::Abi

Same as IntoWasmAbi::Abi
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fn return_abi(self) -> <T as ReturnWasmAbi>::Abi

Same as IntoWasmAbi::into_abi, except that it may throw and never return in the case of Err.
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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Mutable access to a value. Read more
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where Self: Borrow<B>, B: ?Sized,

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where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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where Self: Deref<Target = T>, T: ?Sized,

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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

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Calls .tap_mut() only in debug builds, and is erased in release builds.
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where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

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type Error = Infallible

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Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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fn vzip(self) -> V

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where S: Into<Dispatch>,

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