pact/src/c/math.rs

use binding::{CFloat, CDouble, CInt};


// Taken from: https://en.wikipedia.org/wiki/C_mathematical_functions
#[link(name="m")]
extern
{
   // Basic functions.
   pub fn fabs(arg: CDouble) -> CDouble;
   pub fn fma(x: CDouble, y: CDouble, z: CDouble) -> CDouble;
   pub fn fmax(x: CDouble, y: CDouble) -> CDouble;
   pub fn fmin(x: CDouble, y: CDouble) -> CDouble;
   pub fn fmod(x: CDouble, y: CDouble) -> CDouble;
   pub fn fabsf(arg: CFloat) -> CFloat;
   pub fn fmaf(x: CFloat, y: CFloat, z: CFloat) -> CFloat;
   pub fn fmaxf(x: CFloat, y: CFloat) -> CFloat;
   pub fn fminf(x: CFloat, y: CFloat) -> CFloat;
   pub fn fmodf(x: CFloat, y: CFloat) -> CFloat;

   // Nearest integer floating point functions.
   pub fn ceil(arg: CDouble) -> CDouble;
   pub fn floor(arg: CDouble) -> CDouble;
   pub fn round(arg: CDouble) -> CDouble;
   pub fn trunc(arg: CDouble) -> CDouble;
   pub fn ceilf(arg: CFloat) -> CFloat;
   pub fn floorf(arg: CFloat) -> CFloat;
   pub fn roundf(arg: CFloat) -> CFloat;
   pub fn truncf(arg: CFloat) -> CFloat;

   // Trigonometric functions.
   pub fn cos(arg: CDouble) -> CDouble;
   pub fn sin(arg: CDouble) -> CDouble;
   pub fn tan(arg: CDouble) -> CDouble;
   pub fn acos(arg: CDouble) -> CDouble;
   pub fn asin(arg: CDouble) -> CDouble;
   pub fn atan(arg: CDouble) -> CDouble;
   pub fn atan2(y: CDouble, x: CDouble) -> CDouble;
   pub fn cosf(arg: CFloat) -> CFloat;
   pub fn sinf(arg: CFloat) -> CFloat;
   pub fn tanf(arg: CFloat) -> CFloat;
   pub fn acosf(arg: CFloat) -> CFloat;
   pub fn asinf(arg: CFloat) -> CFloat;
   pub fn atanf(arg: CFloat) -> CFloat;
   pub fn atan2f(y: CFloat, x: CFloat) -> CFloat;

   // Hyperbolic functions.
   pub fn cosh(arg: CDouble) -> CDouble;
   pub fn sinh(arg: CDouble) -> CDouble;
   pub fn tanh(arg: CDouble) -> CDouble;
   pub fn acosh(arg: CDouble) -> CDouble;
   pub fn asinh(arg: CDouble) -> CDouble;
   pub fn atanh(arg: CDouble) -> CDouble;
   pub fn coshf(arg: CFloat) -> CFloat;
   pub fn sinhf(arg: CFloat) -> CFloat;
   pub fn tanhf(arg: CFloat) -> CFloat;
   pub fn acoshf(arg: CFloat) -> CFloat;
   pub fn asinhf(arg: CFloat) -> CFloat;
   pub fn atanhf(arg: CFloat) -> CFloat;

   // Exponential functions.
   pub fn exp(arg: CDouble) -> CDouble;
   pub fn exp2(arg: CDouble) -> CDouble;
   pub fn expm1(arg: CDouble) -> CDouble;
   pub fn log(arg: CDouble) -> CDouble;
   pub fn log2(arg: CDouble) -> CDouble;
   pub fn log10(arg: CDouble) -> CDouble;
   pub fn log1p(arg: CDouble) -> CDouble;
   pub fn logb(arg: CDouble) -> CDouble;
   pub fn ilogb(arg: CDouble) -> CInt;
   pub fn expf(arg: CFloat) -> CFloat;
   pub fn exp2f(arg: CFloat) -> CFloat;
   pub fn expm1f(arg: CFloat) -> CFloat;
   pub fn logf(arg: CFloat) -> CFloat;
   pub fn log2f(arg: CFloat) -> CFloat;
   pub fn log10f(arg: CFloat) -> CFloat;
   pub fn log1pf(arg: CFloat) -> CFloat;
   pub fn logbf(arg: CFloat) -> CFloat;
   pub fn ilogbf(arg: CFloat) -> CInt;

   // Power functions.
   pub fn cbrt(arg: CDouble) -> CDouble;
   pub fn hypot(x: CDouble, y: CDouble) -> CDouble;
   pub fn pow(base: CDouble, exponent: CDouble) -> CDouble;
   pub fn sqrt(arg: CDouble) -> CDouble;
   pub fn cbrtf(arg: CFloat) -> CFloat;
   pub fn hypotf(x: CFloat, y: CFloat) -> CFloat;
   pub fn powf(base: CFloat, exponent: CFloat) -> CFloat;
   pub fn sqrtf(arg: CFloat) -> CFloat;

   // Floating point manipulation functions.
   pub fn frexp(arg: CDouble, exp: *mut CInt) -> CDouble;
   pub fn ldexp(arg: CDouble, exp: CInt) -> CDouble;
   pub fn modf(arg: CDouble, integer: *mut CInt)-> CDouble;
   pub fn frexpf(arg: CFloat, exp: *mut CInt) -> CFloat;
   pub fn ldexpf(arg: CFloat, exp: CInt) -> CFloat;
   pub fn modff(arg: CFloat, integer: *mut CInt)-> CFloat;
}