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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![allow(missing_doc)]
#![allow(dead_code)]
//! Bindings for the C math library (for basic mathematic functions)
// Function names are almost identical to C's libmath, a few have been
// renamed, grep for "rename:"
pub mod c_double {
use libc::{c_double, c_int};
#[link_name = "m"]
extern {
// Alphabetically sorted by link_name
pub fn acos(n: c_double) -> c_double;
pub fn asin(n: c_double) -> c_double;
pub fn atan(n: c_double) -> c_double;
pub fn atan2(a: c_double, b: c_double) -> c_double;
pub fn cbrt(n: c_double) -> c_double;
pub fn cosh(n: c_double) -> c_double;
pub fn erf(n: c_double) -> c_double;
pub fn erfc(n: c_double) -> c_double;
// rename: for consistency with underscore usage elsewhere
#[link_name="expm1"]
pub fn exp_m1(n: c_double) -> c_double;
// rename: for clarity and consistency with add/sub/mul/div
#[link_name="fdim"]
pub fn abs_sub(a: c_double, b: c_double) -> c_double;
#[link_name="fmax"]
pub fn fmax(a: c_double, b: c_double) -> c_double;
#[link_name="fmin"]
pub fn fmin(a: c_double, b: c_double) -> c_double;
#[link_name="nextafter"]
pub fn next_after(x: c_double, y: c_double) -> c_double;
pub fn frexp(n: c_double, value: &mut c_int) -> c_double;
pub fn hypot(x: c_double, y: c_double) -> c_double;
pub fn ldexp(x: c_double, n: c_int) -> c_double;
#[cfg(unix)]
#[link_name="lgamma_r"]
pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
#[cfg(windows)]
#[link_name="__lgamma_r"]
pub fn lgamma(n: c_double, sign: &mut c_int) -> c_double;
// renamed: "logb" /often/ is confused for log2 by beginners
#[link_name="logb"]
pub fn log_radix(n: c_double) -> c_double;
// renamed: to be consitent with log as ln
#[link_name="log1p"]
pub fn ln_1p(n: c_double) -> c_double;
#[link_name="ilogb"]
pub fn ilog_radix(n: c_double) -> c_int;
pub fn modf(n: c_double, iptr: &mut c_double) -> c_double;
// rename: for consistency with logradix
#[link_name="scalbn"]
pub fn ldexp_radix(n: c_double, i: c_int) -> c_double;
pub fn sinh(n: c_double) -> c_double;
pub fn tan(n: c_double) -> c_double;
pub fn tanh(n: c_double) -> c_double;
pub fn tgamma(n: c_double) -> c_double;
// These are commonly only available for doubles
pub fn j0(n: c_double) -> c_double;
pub fn j1(n: c_double) -> c_double;
pub fn jn(i: c_int, n: c_double) -> c_double;
pub fn y0(n: c_double) -> c_double;
pub fn y1(n: c_double) -> c_double;
pub fn yn(i: c_int, n: c_double) -> c_double;
}
}
pub mod c_float {
use libc::{c_float, c_int};
#[link_name = "m"]
extern {
// Alphabetically sorted by link_name
#[link_name="acosf"]
pub fn acos(n: c_float) -> c_float;
#[link_name="asinf"]
pub fn asin(n: c_float) -> c_float;
#[link_name="atanf"]
pub fn atan(n: c_float) -> c_float;
#[link_name="atan2f"]
pub fn atan2(a: c_float, b: c_float) -> c_float;
#[link_name="cbrtf"]
pub fn cbrt(n: c_float) -> c_float;
#[link_name="coshf"]
pub fn cosh(n: c_float) -> c_float;
#[link_name="erff"]
pub fn erf(n: c_float) -> c_float;
#[link_name="erfcf"]
pub fn erfc(n: c_float) -> c_float;
#[link_name="expm1f"]
pub fn exp_m1(n: c_float) -> c_float;
#[link_name="fdimf"]
pub fn abs_sub(a: c_float, b: c_float) -> c_float;
#[link_name="frexpf"]
pub fn frexp(n: c_float, value: &mut c_int) -> c_float;
#[link_name="fmaxf"]
pub fn fmax(a: c_float, b: c_float) -> c_float;
#[link_name="fminf"]
pub fn fmin(a: c_float, b: c_float) -> c_float;
#[link_name="nextafterf"]
pub fn next_after(x: c_float, y: c_float) -> c_float;
#[link_name="hypotf"]
pub fn hypot(x: c_float, y: c_float) -> c_float;
#[link_name="ldexpf"]
pub fn ldexp(x: c_float, n: c_int) -> c_float;
#[cfg(unix)]
#[link_name="lgammaf_r"]
pub fn lgamma(n: c_float, sign: &mut c_int) -> c_float;
#[cfg(windows)]
#[link_name="__lgammaf_r"]
pub fn lgamma(n: c_float, sign: &mut c_int) -> c_float;
#[link_name="logbf"]
pub fn log_radix(n: c_float) -> c_float;
#[link_name="log1pf"]
pub fn ln_1p(n: c_float) -> c_float;
#[link_name="ilogbf"]
pub fn ilog_radix(n: c_float) -> c_int;
#[link_name="modff"]
pub fn modf(n: c_float, iptr: &mut c_float) -> c_float;
#[link_name="scalbnf"]
pub fn ldexp_radix(n: c_float, i: c_int) -> c_float;
#[link_name="sinhf"]
pub fn sinh(n: c_float) -> c_float;
#[link_name="tanf"]
pub fn tan(n: c_float) -> c_float;
#[link_name="tanhf"]
pub fn tanh(n: c_float) -> c_float;
#[link_name="tgammaf"]
pub fn tgamma(n: c_float) -> c_float;
}
}
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