Struct IntFloat

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pub struct IntFloat { /* private fields */ }
Expand description

Simplified alternative to rust_decimal::Decimal to that allows hashing. Standard library floats can’t be hashed which is needed when using (for example) HashMaps. The number is converted to a x 10^-b, with a and b being integers (and thus Hashable).

Note that when accuracy is important, rust_decimal::Decimal is a safer alternative. But when speed is needed, this implementation is faster.

§Examples

use intfloat::IntFloat;
let a = IntFloat::from(10 as f32, 0);
let b = IntFloat::from(5.2, 0);
assert_eq!(a, b+b);

let c = IntFloat::from(5.2, 1);
assert_ne!(b, c);

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impl IntFloat

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pub fn new(base: isize, pow: isize) -> Self

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pub fn from(float: f32, decimals: isize) -> Self

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pub fn print(self) -> String

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impl Add<IntFloat> for &mut IntFloat

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type Output = IntFloat

The resulting type after applying the + operator.
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fn add(self, rhs: IntFloat) -> IntFloat

Performs the + operation. Read more
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impl Add for IntFloat

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type Output = IntFloat

The resulting type after applying the + operator.
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fn add(self, rhs: Self) -> IntFloat

Performs the + operation. Read more
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impl AddAssign for IntFloat

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fn add_assign(&mut self, rhs: Self)

Performs the += operation. Read more
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impl Clone for IntFloat

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fn clone(&self) -> IntFloat

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 IntFloat

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fn default() -> IntFloat

Returns the “default value” for a type. Read more
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impl Display for IntFloat

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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 Div for IntFloat

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type Output = IntFloat

The resulting type after applying the / operator.
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fn div(self, rhs: Self) -> IntFloat

Performs the / operation. Read more
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impl Hash for IntFloat

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

Feeds this value into the given Hasher. Read more
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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 Mul for IntFloat

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type Output = IntFloat

The resulting type after applying the * operator.
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fn mul(self, rhs: Self) -> IntFloat

Performs the * operation. Read more
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impl Num for IntFloat

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type FromStrRadixErr = ParseIntError

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fn from_str_radix(str: &str, radix: u32) -> Result<IntFloat, ParseIntError>

Convert from a string and radix (typically 2..=36). Read more
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impl One for IntFloat

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fn one() -> Self

Returns the multiplicative identity element of Self, 1. Read more
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fn set_one(&mut self)

Sets self to the multiplicative identity element of Self, 1.
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fn is_one(&self) -> bool
where Self: PartialEq,

Returns true if self is equal to the multiplicative identity. Read more
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impl PartialEq for IntFloat

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for IntFloat

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fn partial_cmp(&self, other: &IntFloat) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Rem for IntFloat

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type Output = IntFloat

The resulting type after applying the % operator.
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fn rem(self, rhs: Self) -> IntFloat

Performs the % operation. Read more
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impl Sub for IntFloat

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type Output = IntFloat

The resulting type after applying the - operator.
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fn sub(self, rhs: Self) -> IntFloat

Performs the - operation. Read more
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impl SubAssign for IntFloat

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fn sub_assign(&mut self, rhs: Self)

Performs the -= operation. Read more
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impl Sum for IntFloat

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fn sum<I: Iterator<Item = Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by “summing up” the items.
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impl ToPrimitive for IntFloat

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fn to_i64(&self) -> Option<i64>

Converts the value of self to an i64. If the value cannot be represented by an i64, then None is returned.
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fn to_u64(&self) -> Option<u64>

Converts the value of self to a u64. If the value cannot be represented by a u64, then None is returned.
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fn to_f32(&self) -> Option<f32>

Converts the value of self to an f32. Overflows may map to positive or negative inifinity, otherwise None is returned if the value cannot be represented by an f32.
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fn to_f64(&self) -> Option<f64>

Converts the value of self to an f64. Overflows may map to positive or negative inifinity, otherwise None is returned if the value cannot be represented by an f64. Read more
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fn to_isize(&self) -> Option<isize>

Converts the value of self to an isize. If the value cannot be represented by an isize, then None is returned.
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fn to_i8(&self) -> Option<i8>

Converts the value of self to an i8. If the value cannot be represented by an i8, then None is returned.
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fn to_i16(&self) -> Option<i16>

Converts the value of self to an i16. If the value cannot be represented by an i16, then None is returned.
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fn to_i32(&self) -> Option<i32>

Converts the value of self to an i32. If the value cannot be represented by an i32, then None is returned.
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fn to_i128(&self) -> Option<i128>

Converts the value of self to an i128. If the value cannot be represented by an i128 (i64 under the default implementation), then None is returned. Read more
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fn to_usize(&self) -> Option<usize>

Converts the value of self to a usize. If the value cannot be represented by a usize, then None is returned.
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fn to_u8(&self) -> Option<u8>

Converts the value of self to a u8. If the value cannot be represented by a u8, then None is returned.
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fn to_u16(&self) -> Option<u16>

Converts the value of self to a u16. If the value cannot be represented by a u16, then None is returned.
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fn to_u32(&self) -> Option<u32>

Converts the value of self to a u32. If the value cannot be represented by a u32, then None is returned.
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fn to_u128(&self) -> Option<u128>

Converts the value of self to a u128. If the value cannot be represented by a u128 (u64 under the default implementation), then None is returned. Read more
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impl Zero for IntFloat

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fn zero() -> Self

Returns the additive identity element of Self, 0. Read more
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fn is_zero(&self) -> bool

Returns true if self is equal to the additive identity.
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fn set_zero(&mut self)

Sets self to the additive identity element of Self, 0.
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impl Copy for IntFloat

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impl Eq for IntFloat

Auto Trait Implementations§

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, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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, 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> 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

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, Rhs, Output> NumOps<Rhs, Output> for T
where T: Sub<Rhs, Output = Output> + Mul<Rhs, Output = Output> + Div<Rhs, Output = Output> + Add<Rhs, Output = Output> + Rem<Rhs, Output = Output>,