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//! Functions to manipulate Oracle Numbers:
//! NUMBER, NUMERIC, INT, SHORTINT, REAL, DOUBLE PRECISION, FLOAT and DECIMAL.
mod convert;
mod tosql;
pub use self::convert::Integer;
pub(crate) use self::convert::{Real, from_number, to_string, to_real};
use super::{Ctx, interval::Interval};
use crate::{Result, oci::{self, *}};
use std::{cmp::Ordering, mem, ops::{Deref, DerefMut}};
/**
Creates an uninitialized OCI number. This simplified version of `u128_into_number`
is used to create an output variable buffer.
**Note** that we cannot pass an `uninit` version of `OCINumber` to be used for output.
While `uninit` variant works on Windows, it fails with ORA-01458 on Linux. Setting
first byte to 0 creates a predictable unitialized Number.
*/
pub(crate) fn new() -> OCINumber {
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
let ptr = num.as_mut_ptr();
unsafe {
// (*ptr).bytes[0] = 1;
// (*ptr).bytes[1] = 128;
(*ptr).bytes[0] = 0;
num.assume_init()
}
}
// pub(crate) fn new_number<'a>(num: OCINumber, ctx: &'a dyn Ctx) -> Number<'a> {
// Number { ctx, num }
// }
fn compare(num1: &OCINumber, num2: &OCINumber, err: &OCIError) -> Result<Ordering> {
let mut cmp = 0i32;
oci::number_cmp(err, num1, num2, &mut cmp)?;
let ordering = if cmp < 0 {
Ordering::Less
} else if cmp == 0 {
Ordering::Equal
} else {
Ordering::Greater
};
Ok(ordering)
}
macro_rules! impl_query {
($this:ident => $f:path) => {{
let mut res: i32 = 0;
$f($this.ctx.as_ref(), &$this.num, &mut res)?;
Ok(res != 0)
}};
}
macro_rules! impl_fn {
($this:ident => $f:path) => {{
let ctx = $this.ctx;
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
$f(ctx.as_ref(), &$this.num, num.as_mut_ptr())?;
let num = unsafe { num.assume_init() };
Ok(Number { num, ctx })
}};
}
macro_rules! impl_op {
($this:ident, $other:ident => $f:path) => {{
let ctx = $this.ctx;
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
$f(ctx.as_ref(), &$this.num, &$other.num, num.as_mut_ptr())?;
let num = unsafe { num.assume_init() };
Ok(Number { num, ctx })
}};
}
macro_rules! impl_opi {
($this:ident, $int:ident => $f:path) => {{
let ctx = $this.ctx;
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
$f(ctx.as_ref(), &$this.num, $int, num.as_mut_ptr())?;
let num = unsafe { num.assume_init() };
Ok(Number { num, ctx })
}};
}
/// Represents OTS types NUMBER, NUMERIC, INT, SHORTINT, REAL, DOUBLE PRECISION, FLOAT and DECIMAL.
pub struct Number<'a> {
ctx: &'a dyn Ctx,
num: OCINumber,
}
impl AsRef<OCINumber> for Number<'_> {
fn as_ref(&self) -> &OCINumber {
&self.num
}
}
impl AsMut<OCINumber> for Number<'_> {
fn as_mut(&mut self) -> &mut OCINumber {
&mut self.num
}
}
impl Deref for Number<'_> {
type Target = OCINumber;
fn deref(&self) -> &Self::Target {
self.as_ref()
}
}
impl DerefMut for Number<'_> {
fn deref_mut(&mut self) -> &mut Self::Target {
self.as_mut()
}
}
impl<'a> Number<'a> {
pub(crate) fn to_interval<T: DescriptorType<OCIType=OCIInterval>>(&self) -> Result<Interval<'a, T>> {
let mut interval = Descriptor::<T>::new(&self.ctx)?;
oci::interval_from_number(self.ctx.as_context(), self.ctx.as_ref(), &mut interval, &self.num)?;
Ok(Interval::from(interval, self.ctx))
}
pub(crate) fn from(src: &OCINumber, ctx: &'a dyn Ctx) -> Result<Self> {
let num = from_number(src, ctx.as_ref())?;
Ok(Self {num, ctx})
}
pub(crate) fn make(num: OCINumber, ctx: &'a dyn Ctx) -> Self {
Self {num, ctx}
}
/// Returns a new uninitialized number.
pub fn new(ctx: &'a dyn Ctx) -> Self {
Self { ctx, num: new() }
}
/**
Creates a new Number that is equal to zero.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::zero(&env);
assert!(num.is_zero()?);
# Ok::<(),oracle::Error>(())
```
*/
pub fn zero(ctx: &'a dyn Ctx) -> Self {
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
unsafe {
OCINumberSetZero(ctx.as_ref(), num.as_mut_ptr());
}
let num = unsafe { num.assume_init() };
Self { ctx, num }
}
/**
Creates a new Number that is equal to Pi.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
assert_eq!(num.to_string("TM")?, "3.1415926535897932384626433832795028842");
# Ok::<(),oracle::Error>(())
```
*/
pub fn pi(ctx: &'a dyn Ctx) -> Self {
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
unsafe {
OCINumberSetPi(ctx.as_ref(), num.as_mut_ptr());
}
let num = unsafe { num.assume_init() };
Self { ctx, num }
}
/**
Creates a new Number from a string using specified format.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_string("6.62607004E-34", "9D999999999EEEE", &env)?;
assert_eq!(num.to_string("TME")?, "6.62607004E-34");
# Ok::<(),oracle::Error>(())
```
*/
pub fn from_string(txt: &str, fmt: &str, ctx: &'a dyn Ctx) -> Result<Self> {
let mut num = mem::MaybeUninit::<OCINumber>::uninit();
oci::number_from_text(
ctx.as_ref(),
txt.as_ptr(),
txt.len() as u32,
fmt.as_ptr(),
fmt.len() as u32,
num.as_mut_ptr(),
)?;
Ok(Self {
ctx,
num: unsafe { num.assume_init() },
})
}
/**
Creates a new Number from an integer.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(42, &env)?;
assert!(num.is_int()?);
assert_eq!(num.to_int::<i32>()?, 42);
# Ok::<(),oracle::Error>(())
```
*/
pub fn from_int<T: Integer>(val: T, ctx: &'a dyn Ctx) -> Result<Self> {
let num = val.into_number(ctx.as_ref())?;
Ok(Self { ctx, num })
}
/**
Creates a new Number from a floating point number.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(2.7182818284590452353602874713527, &env)?;
assert_eq!(num.to_string("TM")?, "2.71828182845905");
# Ok::<(),oracle::Error>(())
```
*/
pub fn from_real<T: Real>(val: T, ctx: &'a dyn Ctx) -> Result<Self> {
let num = val.into_number(ctx.as_ref())?;
Ok(Self { ctx, num })
}
/**
Creates a clone of the other number.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(8128, &env)?;
let dup = Number::from_number(&num)?;
assert_eq!(dup.to_int::<i32>()?, 8128);
# Ok::<(),oracle::Error>(())
```
*/
pub fn from_number(other: &'a Number) -> Result<Self> {
let num = from_number(&other.num, other.ctx.as_ref())?;
Ok(Self {num, ..*other})
}
/**
Assigns self the value of the specified number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let src = Number::from_int(33550336, &env)?;
let mut dst = Number::zero(&env);
assert_eq!(dst.to_int::<i32>()?, 0);
dst.assign(&src)?;
assert_eq!(dst.to_int::<i32>()?, 33550336);
# Ok::<(),oracle::Error>(())
```
*/
pub fn assign(&mut self, src: &Number) -> Result<()> {
oci::number_assign(self.ctx.as_ref(), &src.num, &mut self.num)
}
/**
Converts the given number to a character string according to the specified format.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(42, &env)?;
let txt = num.to_string("FM0G999")?;
assert_eq!(txt, "0,042");
# Ok::<(),oracle::Error>(())
```
*/
pub fn to_string(&self, fmt: &str) -> Result<String> {
to_string(fmt, &self.num, self.ctx.as_ref())
}
/**
Converts this Number into an integer (u128, u64, u32, u16, u8, i128, i64, i32, i16, i8).
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let val = num.to_int::<i32>()?;
assert_eq!(val, 3);
# Ok::<(),oracle::Error>(())
```
*/
pub fn to_int<T: Integer>(&self) -> Result<T> {
<T>::from_number(&self.num, self.ctx.as_ref())
}
/**
Returns floating point representation of self
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let val = num.to_real::<f64>()?;
assert!(3.14159265358978 < val && val < 3.14159265358980);
# Ok::<(),oracle::Error>(())
```
*/
pub fn to_real<T: Real>(&self) -> Result<T> {
to_real(&self.num, self.ctx.as_ref())
}
/**
Test if this number is equal to zero
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let mut num = Number::zero(&env);
assert!(num.is_zero()?);
num.inc()?;
assert!(!num.is_zero()?);
# Ok::<(),oracle::Error>(())
```
*/
pub fn is_zero(&self) -> Result<bool> {
impl_query!(self => oci::number_is_zero)
}
/**
Tests if this number is an integer
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::zero(&env);
assert!(num.is_int()?);
let num = Number::pi(&env);
assert!(!num.is_int()?);
# Ok::<(),oracle::Error>(())
```
*/
pub fn is_int(&self) -> Result<bool> {
impl_query!(self => oci::number_is_int)
}
/**
Increments Oracle number in place
It is assumed that the input is an integer between 0 and 100^21-2.
If the is input too large, it will be treated as 0 - the result will be an Oracle number 1.
If the input is not a positive integer, the result will be unpredictable.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let mut num = Number::zero(&env);
num.inc()?;
assert_eq!(num.to_int::<i32>()?, 1);
# Ok::<(),oracle::Error>(())
```
*/
pub fn inc(&mut self) -> Result<()> {
oci::number_inc(self.ctx.as_ref(), &mut self.num)
}
/**
Decrements Oracle number in place
It is assumed that the input is an integer between 0 and 100^21-2.
If the is input too large, it will be treated as 0 - the result will be an Oracle number 1.
If the input is not a positive integer, the result will be unpredictable.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let mut num = Number::from_int(97, &env)?;
num.dec()?;
assert_eq!(num.to_int::<i32>()?, 96);
# Ok::<(),oracle::Error>(())
```
*/
pub fn dec(&mut self) -> Result<()> {
oci::number_dec(self.ctx.as_ref(), &mut self.num)
}
/**
Returns sign of a number (as a result of comparing it to zero).
# Example
```
use sibyl::{ self as oracle, Number };
use std::cmp::Ordering;
let env = oracle::env()?;
let num = Number::from_int(19, &env)?;
assert_eq!(num.sign()?, Ordering::Greater);
let num = Number::from_int(-17, &env)?;
assert_eq!(num.sign()?, Ordering::Less);
let num = Number::zero(&env);
assert_eq!(num.sign()?, Ordering::Equal);
# Ok::<(),oracle::Error>(())
```
*/
pub fn sign(&self) -> Result<Ordering> {
let mut res = 0i32;
oci::number_sign(self.ctx.as_ref(), &self.num, &mut res)?;
let ordering = if res == 0 {
Ordering::Equal
} else if res < 0 {
Ordering::Less
} else {
Ordering::Greater
};
Ok(ordering)
}
/**
Compares self to a number.
# Example
```
use sibyl::{ self as oracle, Number };
use std::cmp::Ordering;
let env = oracle::env()?;
let pi = Number::pi(&env);
let e = Number::from_real(2.71828182845905, &env)?;
assert_eq!(pi.compare(&e)?, Ordering::Greater);
assert_eq!(e.compare(&pi)?, Ordering::Less);
# Ok::<(),oracle::Error>(())
```
*/
pub fn compare(&self, other: &Self) -> Result<Ordering> {
compare(&self.num, &other.num, self.ctx.as_ref())
}
/**
Adds a Number to this Number and returns the sum as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(19, &env)?;
let arg = Number::from_int(50, &env)?;
let res = num.add(&arg)?;
assert_eq!(res.to_int::<i32>()?, 69);
# Ok::<(),oracle::Error>(())
```
*/
pub fn add(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_add)
}
/**
Subtracts a Number from this Number and returns the difference as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(90, &env)?;
let arg = Number::from_int(21, &env)?;
let res = num.sub(&arg)?;
assert_eq!(res.to_int::<i32>()?, 69);
# Ok::<(),oracle::Error>(())
```
*/
pub fn sub(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_sub)
}
/**
Multiplies a Number to this Number and returns the product as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(3.5, &env)?;
let arg = Number::from_int(8, &env)?;
let res = num.mul(&arg)?;
assert!(res.is_int()?);
assert_eq!(res.to_int::<i32>()?, 28);
# Ok::<(),oracle::Error>(())
```
*/
pub fn mul(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_mul)
}
/**
Divides a Number (dividend) by a Number (divisor) and returns the quotient as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(256, &env)?;
let arg = Number::from_int(8, &env)?;
let res = num.div(&arg)?;
assert!(res.is_int()?);
assert_eq!(res.to_int::<i32>()?, 32);
# Ok::<(),oracle::Error>(())
```
*/
pub fn div(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_div)
}
/**
Finds the remainder of the division of two Numbers and returns it as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(255, &env)?;
let arg = Number::from_int(32, &env)?;
let res = num.rem(&arg)?;
assert!(res.is_int()?);
assert_eq!(res.to_int::<i32>()?, 31);
# Ok::<(),oracle::Error>(())
```
*/
pub fn rem(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_mod)
}
/**
Raises a number to an arbitrary power and returns the result as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(2.55, &env)?;
let arg = Number::from_real(3.2, &env)?;
let res = num.pow(&arg)?;
let val = res.to_real::<f64>()?;
assert!(19.995330061114 < val && val < 19.995330061115);
# Ok::<(),oracle::Error>(())
```
*/
pub fn pow(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_power)
}
/**
Raises a number to an integer power and returns the result as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(2.55, &env)?;
let res = num.powi(3)?;
let val = res.to_real::<f64>()?;
assert!(16.581374999 < val && val < 16.581375001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn powi(&self, num: i32) -> Result<Self> {
impl_opi!(self, num => oci::number_int_power)
}
/**
Multiplies a number by by a power of 10 and returns the result as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(2.55, &env)?;
let res = num.pow10(2)?;
assert_eq!(res.to_int::<i32>()?, 255);
let res = res.pow10(-1)?;
assert_eq!(res.to_real::<f64>()?, 25.5);
# Ok::<(),oracle::Error>(())
```
*/
pub fn pow10(&self, num: i32) -> Result<Self> {
impl_opi!(self, num => oci::number_shift)
}
/**
Truncates a number at a specified decimal place and returns the result as a new Number
`num` is the number of decimal digits to the right of the decimal point to truncate at.
Negative values are allowed.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let res = num.trunc(7)?;
assert_eq!(res.to_string("TM")?, "3.1415926");
let res = res.pow10(5)?;
assert_eq!(res.to_real::<f64>()?, 314159.26);
let res = res.trunc(-3)?;
assert_eq!(res.to_real::<f64>()?, 314000.0);
# Ok::<(),oracle::Error>(())
```
*/
pub fn trunc(&self, num: i32) -> Result<Self> {
impl_opi!(self, num => oci::number_trunc)
}
/**
Rounds a number to a specified decimal place and returns the result as a new Number.
`num` is the number of decimal digits to the right of the decimal point to truncate at.
Negative values are allowed.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let res = num.round(7)?;
assert_eq!(res.to_string("TM")?, "3.1415927");
# Ok::<(),oracle::Error>(())
```
*/
pub fn round(&self, num: i32) -> Result<Self> {
impl_opi!(self, num => oci::number_round)
}
/**
Performs a floating point round with respect to the number of digits and returns the result
as a new Number.
`num` is the number of decimal digits desired in the result.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let res = num.prec(10)?;
assert_eq!(res.to_string("TM")?, "3.141592654");
# Ok::<(),oracle::Error>(())
```
*/
pub fn prec(&self, num: i32) -> Result<Self> {
impl_opi!(self, num => oci::number_prec)
}
/**
Negates a number and returns the result as a new Number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(42, &env)?;
let res = num.neg()?;
assert_eq!(res.to_int::<i32>()?, -42);
# Ok::<(),oracle::Error>(())
```
*/
pub fn neg(&self) -> Result<Self> {
impl_fn!(self => oci::number_neg)
}
/**
Returns the absolute value of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(-42, &env)?;
let res = num.abs()?;
assert_eq!(res.to_int::<i32>()?, 42);
# Ok::<(),oracle::Error>(())
```
*/
pub fn abs(&self) -> Result<Self> {
impl_fn!(self => oci::number_abs)
}
/**
Returns the smallers integer greater than or equal to a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let res = num.ceil()?;
assert!(res.is_int()?);
assert_eq!(res.to_int::<i32>()?, 4);
# Ok::<(),oracle::Error>(())
```
*/
pub fn ceil(&self) -> Result<Self> {
impl_fn!(self => oci::number_ceil)
}
/**
Returns the largest integer less than or equal to a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::pi(&env);
let res = num.floor()?;
assert!(res.is_int()?);
assert_eq!(res.to_int::<i32>()?, 3);
# Ok::<(),oracle::Error>(())
```
*/
pub fn floor(&self) -> Result<Self> {
impl_fn!(self => oci::number_floor)
}
/**
Returns the square root of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(121, &env)?;
let res = num.sqrt()?;
assert!(res.is_int()?);
assert_eq!(res.to_int::<i32>()?, 11);
# Ok::<(),oracle::Error>(())
```
*/
pub fn sqrt(&self) -> Result<Self> {
impl_fn!(self => oci::number_sqrt)
}
/**
Return the sine in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.52359877559, &env)?;
let res = num.sin()?;
let val = res.to_real::<f64>()?;
assert!(0.499999999 < val && val < 0.500000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn sin(&self) -> Result<Self> {
impl_fn!(self => oci::number_sin)
}
/**
Return the arcsine in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.5, &env)?;
let res = num.asin()?;
let val = res.to_real::<f64>()?;
assert!(0.523598775 < val && val < 0.523598776);
# Ok::<(),oracle::Error>(())
```
*/
pub fn asin(&self) -> Result<Self> {
impl_fn!(self => oci::number_arc_sin)
}
/**
Return the hyperbolic sine in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.88137358702, &env)?;
let res = num.sinh()?;
let val = res.to_real::<f64>()?;
assert!(0.999999999 < val && val < 1.000000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn sinh(&self) -> Result<Self> {
impl_fn!(self => oci::number_hyp_sin)
}
/**
Return the cosine in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(1.0471975512, &env)?;
let res = num.cos()?;
let val = res.to_real::<f64>()?;
assert!(0.499999999 < val && val < 0.500000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn cos(&self) -> Result<Self> {
impl_fn!(self => oci::number_cos)
}
/**
Return the arccosine in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.5, &env)?;
let res = num.acos()?;
let val = res.to_real::<f64>()?;
assert!(1.047197551 < val && val < 1.047197552);
# Ok::<(),oracle::Error>(())
```
*/
pub fn acos(&self) -> Result<Self> {
impl_fn!(self => oci::number_arc_cos)
}
/**
Return the hyperbolic cosine in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.96242365012, &env)?;
let res = num.cosh()?;
let val = res.to_real::<f64>()?;
assert!(1.499999999 < val && val < 1.500000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn cosh(&self) -> Result<Self> {
impl_fn!(self => oci::number_hyp_cos)
}
/**
Return the tangent in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.785398163397, &env)?;
let res = num.tan()?;
let val = res.to_real::<f64>()?;
assert!(0.999999999 < val && val < 1.000000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn tan(&self) -> Result<Self> {
impl_fn!(self => oci::number_tan)
}
/**
Return the arctangent in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(1, &env)?;
let res = num.atan()?;
let val = res.to_real::<f64>()?;
assert!(0.785398163 < val && val < 0.785398164);
# Ok::<(),oracle::Error>(())
```
*/
pub fn atan(&self) -> Result<Self> {
impl_fn!(self => oci::number_arc_tan)
}
/**
Returns the four quadrant arctangent of `self` and `num` in radians
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let x = Number::from_int(4, &env)?;
let y = Number::from_int(-3, &env)?;
let res = x.atan2(&y)?;
let val = res.to_real::<f64>()?;
assert!(2.2142974355 < val && val < 2.2142974356);
# Ok::<(),oracle::Error>(())
```
*/
pub fn atan2(&self, num: &Number) -> Result<Self> {
impl_op!(self, num => oci::number_arc_tan2)
}
/**
Returns the hyperbolic tangent in radians of a number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(0.54930614434, &env)?;
let res = num.tanh()?;
let val = res.to_real::<f64>()?;
assert!(0.499999999 < val && val < 0.500000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn tanh(&self) -> Result<Self> {
impl_fn!(self => oci::number_hyp_tan)
}
/**
Returns `e^(self)` - the exponential function
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(2.71828182845905, &env)?;
let res = num.exp()?;
let val = res.to_real::<f64>()?;
assert!(15.154262241 < val && val < 15.154262242);
# Ok::<(),oracle::Error>(())
```
*/
pub fn exp(&self) -> Result<Self> {
impl_fn!(self => oci::number_exp)
}
/**
Returns the natural logarithm of the number
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_real(2.71828182845905, &env)?;
let res = num.ln()?;
let val = res.to_real::<f64>()?;
assert!(0.9999999999 < val && val < 1.0000000001);
# Ok::<(),oracle::Error>(())
```
*/
pub fn ln(&self) -> Result<Self> {
impl_fn!(self => oci::number_ln)
}
/**
Returns the logarithm of the numer using with respect to an arbitrary base.
# Example
```
use sibyl::{ self as oracle, Number };
let env = oracle::env()?;
let num = Number::from_int(65536, &env)?;
let base = Number::from_int(4, &env)?;
let res = num.log(&base)?;
assert_eq!(res.to_int::<i32>()?, 8);
# Ok::<(),oracle::Error>(())
```
*/
pub fn log(&self, num: &Number) -> Result<Self> {
let ctx = self.ctx;
let mut res = mem::MaybeUninit::<OCINumber>::uninit();
oci::number_log(ctx.as_ref(), &num.num, &self.num, res.as_mut_ptr())?;
let num = unsafe { res.assume_init() };
Ok(Number {num, ctx})
}
pub fn size(&self) -> usize {
mem::size_of::<OCINumber>()
}
}
impl std::fmt::Debug for Number<'_> {
fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self.to_string("TM") {
Ok(txt) => fmt.write_fmt(format_args!("Number({})", txt)),
Err(err) => fmt.write_fmt(format_args!("Number({})", err)),
}
}
}