Give the nounwind LLVM attribute to all public APIs

Author: gnzlbg

src/math/acos.rs

@@ -62,7 +62,7 @@ fn r(z: f64) -> f64 {
 /// Returns values in radians, in the range of 0 to pi.
 #[inline]
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
-pub fn acos(x: f64) -> f64 {
+pub extern "C" fn acos(x: f64) -> f64 {
     let x1p_120f = f64::from_bits(0x3870000000000000); // 0x1p-120 === 2 ^ -120
     let z: f64;
     let w: f64;

src/math/acosf.rs

@@ -36,7 +36,7 @@ fn r(z: f32) -> f32 {
 /// Returns values in radians, in the range of 0 to pi.
 #[inline]
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
-pub fn acosf(x: f32) -> f32 {
+pub extern "C" fn acosf(x: f32) -> f32 {
     let x1p_120 = f32::from_bits(0x03800000); // 0x1p-120 === 2 ^ (-120)
 
     let z: f32;

src/math/acosh.rs

@@ -7,7 +7,7 @@ const LN2: f64 = 0.693147180559945309417232121458176568; /* 0x3fe62e42,  0xfefa3
 /// Calculates the inverse hyperbolic cosine of `x`.
 /// Is defined as `log(x + sqrt(x*x-1))`.
 /// `x` must be a number greater than or equal to 1.
-pub fn acosh(x: f64) -> f64 {
+pub extern "C" fn acosh(x: f64) -> f64 {
     let u = x.to_bits();
     let e = ((u >> 52) as usize) & 0x7ff;
 

src/math/acoshf.rs

@@ -7,7 +7,7 @@ const LN2: f32 = 0.693147180559945309417232121458176568;
 /// Calculates the inverse hyperbolic cosine of `x`.
 /// Is defined as `log(x + sqrt(x*x-1))`.
 /// `x` must be a number greater than or equal to 1.
-pub fn acoshf(x: f32) -> f32 {
+pub extern "C" fn acoshf(x: f32) -> f32 {
     let u = x.to_bits();
     let a = u & 0x7fffffff;
 

src/math/asin.rs

@@ -69,7 +69,7 @@ fn comp_r(z: f64) -> f64 {
 /// Returns values in radians, in the range of -pi/2 to pi/2.
 #[inline]
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
-pub fn asin(mut x: f64) -> f64 {
+pub extern "C" fn asin(mut x: f64) -> f64 {
     let z: f64;
     let r: f64;
     let s: f64;

src/math/asinf.rs

@@ -38,7 +38,7 @@ fn r(z: f32) -> f32 {
 /// Returns values in radians, in the range of -pi/2 to pi/2.
 #[inline]
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
-pub fn asinf(mut x: f32) -> f32 {
+pub extern "C" fn asinf(mut x: f32) -> f32 {
     let x1p_120 = f64::from_bits(0x3870000000000000); // 0x1p-120 === 2 ^ (-120)
 
     let hx = x.to_bits();

src/math/asinh.rs

@@ -7,7 +7,7 @@ const LN2: f64 = 0.693147180559945309417232121458176568; /* 0x3fe62e42,  0xfefa3
 ///
 /// Calculates the inverse hyperbolic sine of `x`.
 /// Is defined as `sgn(x)*log(|x|+sqrt(x*x+1))`.
-pub fn asinh(mut x: f64) -> f64 {
+pub extern "C" fn asinh(mut x: f64) -> f64 {
     let mut u = x.to_bits();
     let e = ((u >> 52) as usize) & 0x7ff;
     let sign = (u >> 63) != 0;

src/math/asinhf.rs

@@ -7,7 +7,7 @@ const LN2: f32 = 0.693147180559945309417232121458176568;
 ///
 /// Calculates the inverse hyperbolic sine of `x`.
 /// Is defined as `sgn(x)*log(|x|+sqrt(x*x+1))`.
-pub fn asinhf(mut x: f32) -> f32 {
+pub extern "C" fn asinhf(mut x: f32) -> f32 {
     let u = x.to_bits();
     let i = u & 0x7fffffff;
     let sign = (u >> 31) != 0;

src/math/atan.rs

@@ -66,7 +66,7 @@ const AT: [f64; 11] = [
 /// Returns a value in radians, in the range of -pi/2 to pi/2.
 #[inline]
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
-pub fn atan(x: f64) -> f64 {
+pub extern "C" fn atan(x: f64) -> f64 {
     let mut x = x;
     let mut ix = (x.to_bits() >> 32) as u32;
     let sign = ix >> 31;

src/math/atan2.rs

@@ -50,7 +50,7 @@ const PI_LO: f64 = 1.2246467991473531772E-16; /* 0x3CA1A626, 0x33145C07 */
 /// Returns a value in radians, in the range of -pi to pi.
 #[inline]
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
-pub fn atan2(y: f64, x: f64) -> f64 {
+pub extern "C" fn atan2(y: f64, x: f64) -> f64 {
     if x.is_nan() || y.is_nan() {
         return x + y;
     }