Crate bigfloat 

bigfloat

A safe, production-ready wrapper around MPFR for arbitrary-precision floating-point arithmetic.

This crate provides a BigFloat type that supports high‑precision floating‑point operations. All basic arithmetic (addition, subtraction, multiplication, division) is available through operator overloading, and many mathematical functions (such as sqrt, sin, log, factorial, constants, etc.) are exposed as free functions. Precision can be specified either by the number of bits or by the desired number of decimal digits.

Examples

use bigfloat::*;

let x = "123.456".to_bigfloat(256);
let y = "789.012".to_bigfloat(256);
let sum = &x + &y;
assert_eq!(sum.to_string(10), "912.468");

let pi = const_pi(Some(50));
println!("π ≈ {pi}");

Structs

BigFloat

An arbitrary‑precision floating‑point number backed by an MPFR variable.

Traits

MpfrInput

Trait for types that can be converted into a BigFloat.

Functions

acos

Returns the arccosine (inverse cosine) of n radians.

add

Returns the sum of two values, with digits decimal digits of precision (default 500).

asin

Returns the arcsine (inverse sine) of n radians.

atan

Returns the arctangent (inverse tangent) of n radians.

const_e

Returns e (Euler’s number) to d decimal digits of precision (default 500).

const_pi

Returns π (pi) to d decimal digits of precision (default 500).

cos

Returns the cosine of n radians.

deg_to_rad

Converts degrees to radians.

div

Returns the quotient a / b, with digits decimal digits of precision (default 500).

factorial

Returns the factorial of n, n!, computed via Γ(n+1).

ln

Returns the ln of n (ln(n)).

ln_factorial

Returns the natural logarithm of the factorial (ln(n!)).

log

Returns the base‑10 logarithm of n (log10(n)).

log2

Returns the base‑2 logarithm of n (log2(n)).

mul

Returns the product a * b, with digits decimal digits of precision (default 500).

pow

Returns the result of raising b to the power p (b^p).

rad_to_deg

Converts radians to degrees.

root

Returns the n‑th root of b (i.e., b^(1/n)) with d decimal digits of precision.

sin

Returns the sine of n radians.

sqrt

Returns the square root of n with d decimal digits of precision (default 500).

sub

Returns the difference a - b, with digits decimal digits of precision (default 500).

tan

Returns the tangent of n radians.