From 53ad5013a6108172a7759e3f73c1dbd0f4f62e08 Mon Sep 17 00:00:00 2001
From: Jason Travis Smith <Myrddin@CyberMagesLLC.com>
Date: Thu, 22 Jun 2017 18:25:07 -0400
Subject: [PATCH] Most of the math functions are now defined.

---
 src/c/math.rs | 102 +++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 80 insertions(+), 22 deletions(-)

diff --git a/src/c/math.rs b/src/c/math.rs
index c5bbcd0..3d6cb69 100644
--- a/src/c/math.rs
+++ b/src/c/math.rs
@@ -1,29 +1,87 @@
-use binding::{CDouble, CInt};
-
+use binding::{CFloat, CDouble, CInt};
 
 
+// Taken from: https://en.wikipedia.org/wiki/C_mathematical_functions
 #[link(name="m")]
 extern
 {
-   pub fn acos(x: CDouble) -> CDouble;
-   pub fn asin(x: CDouble) -> CDouble;
-   pub fn atan(x: CDouble) -> CDouble;
-   pub fn atan2(y: CDouble, x: CDouble) -> CDouble;
-   pub fn cos(x: CDouble) -> CDouble;
-   pub fn cosh(x: CDouble) -> CDouble;
-   pub fn sin(x: CDouble) -> CDouble;
-   pub fn sinh(x: CDouble) -> CDouble;
-   pub fn tanh(x: CDouble) -> CDouble;
-   pub fn exp(x: CDouble) -> CDouble;
-   pub fn frexp(x: CDouble, exponent: *mut CInt) -> CDouble;
-   pub fn ldexp(x: CDouble, exponent: CInt) -> CDouble;
-   pub fn log(x: CDouble)-> CDouble;
-   pub fn log10(x: CDouble)-> CDouble;
-   pub fn modf(x: CDouble, integer: *mut CInt)-> CDouble;
-   pub fn pow(x: CDouble, y: CDouble) -> CDouble;
-   pub fn sqrt(x: CDouble) -> CDouble;
-   pub fn ceil(x: CDouble) -> CDouble;
-   pub fn fabs(x: CDouble) -> CDouble;
-   pub fn floor(x: CDouble) -> CDouble;
+   // Basic functions.
+   pub fn fabs(arg: CDouble) -> CDouble;
    pub fn fmod(x: CDouble, y: CDouble) -> CDouble;
+   pub fn fabsf(arg: 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 ceilf(arg: CFloat) -> CFloat;
+   pub fn floorf(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;
 }