From 6c802ef0c0966be9c66ad1b6a3becf7205715a6f Mon Sep 17 00:00:00 2001
From: Jason Travis Smith <Myrddin@CyberMagesLLC.com>
Date: Thu, 22 Jun 2017 16:21:30 -0400
Subject: [PATCH] Adding the C math functions.

---
 src/c/math.rs   | 29 +++++++++++++++++++++++++++++
 src/c/mod.rs    |  2 ++
 src/c/stdlib.rs |  2 +-
 src/c/string.rs |  5 -----
 4 files changed, 32 insertions(+), 6 deletions(-)
 create mode 100644 src/c/math.rs

diff --git a/src/c/math.rs b/src/c/math.rs
new file mode 100644
index 0000000..cbfc4c2
--- /dev/null
+++ b/src/c/math.rs
@@ -0,0 +1,29 @@
+use binding::{CDouble, CInt};
+
+
+
+#[link(name="c")]
+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;
+   pub fn fmod(x: CDouble, y: CDouble) -> CDouble;
+}
diff --git a/src/c/mod.rs b/src/c/mod.rs
index 12c8636..e054041 100644
--- a/src/c/mod.rs
+++ b/src/c/mod.rs
@@ -4,6 +4,7 @@
 
 
 mod errno;
+mod math;
 mod stddef;
 mod stdlib;
 mod string;
@@ -12,6 +13,7 @@ mod time;
 
 
 pub use self::errno::*;
+pub use self::math::*;
 pub use self::stddef::*;
 pub use self::stdlib::*;
 pub use self::string::*;
diff --git a/src/c/stdlib.rs b/src/c/stdlib.rs
index 6e34593..2c510b3 100644
--- a/src/c/stdlib.rs
+++ b/src/c/stdlib.rs
@@ -1,7 +1,7 @@
 use binding::CVoid;
 
 
-
+#[link(name="c")]
 extern
 {
    pub fn calloc(nobj: usize, size: usize) -> *mut CVoid;
diff --git a/src/c/string.rs b/src/c/string.rs
index 6b963f5..c4b12ce 100644
--- a/src/c/string.rs
+++ b/src/c/string.rs
@@ -1,8 +1,3 @@
-#[link(name="c")]
-extern
-{
-}
-
 #[cfg(not(feature="no_mem_manip"))]
 #[link(name="c")]
 extern