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Replaced calls to external fmin/fmax by a Rust implementation.

This commit is contained in:
Matthijs Hofstra 2013-05-29 16:21:29 +02:00
parent e3e55c5c04
commit 6cc9a26a2d
2 changed files with 31 additions and 4 deletions
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18
src/libstd/num/f32.rs
View File

@ -86,8 +86,6 @@ delegate!(
fn erfc(n: c_float) -> c_float = c_float_utils::erfc,
fn exp_m1(n: c_float) -> c_float = c_float_utils::exp_m1,
fn abs_sub(a: c_float, b: c_float) -> c_float = c_float_utils::abs_sub,
fn fmax(a: c_float, b: c_float) -> c_float = c_float_utils::fmax,
fn fmin(a: c_float, b: c_float) -> c_float = c_float_utils::fmin,
fn next_after(x: c_float, y: c_float) -> c_float = c_float_utils::next_after,
fn frexp(n: c_float, value: &mut c_int) -> c_float = c_float_utils::frexp,
fn hypot(x: c_float, y: c_float) -> c_float = c_float_utils::hypot,
@ -147,6 +145,22 @@ pub fn ge(x: f32, y: f32) -> bool { return x >= y; }
#[inline(always)]
pub fn gt(x: f32, y: f32) -> bool { return x > y; }
#[inline(always)]
pub fn fmax(x: f32, y: f32) -> f32 {
if x.is_NaN() { y }
else if y.is_NaN() { x }
else if x > y { x }
else { y }
}
#[inline(always)]
pub fn fmin(x: f32, y: f32) -> f32 {
if x.is_NaN() { y }
else if y.is_NaN() { x }
else if x < y { x }
else { y }
}
// FIXME (#1999): replace the predicates below with llvm intrinsics or
// calls to the libmath macros in the rust runtime for performance.

17
src/libstd/num/f64.rs
View File

@ -87,8 +87,6 @@ delegate!(
fn erfc(n: c_double) -> c_double = c_double_utils::erfc,
fn exp_m1(n: c_double) -> c_double = c_double_utils::exp_m1,
fn abs_sub(a: c_double, b: c_double) -> c_double = c_double_utils::abs_sub,
fn fmax(a: c_double, b: c_double) -> c_double = c_double_utils::fmax,
fn fmin(a: c_double, b: c_double) -> c_double = c_double_utils::fmin,
fn next_after(x: c_double, y: c_double) -> c_double = c_double_utils::next_after,
fn frexp(n: c_double, value: &mut c_int) -> c_double = c_double_utils::frexp,
fn hypot(x: c_double, y: c_double) -> c_double = c_double_utils::hypot,
@ -172,6 +170,21 @@ pub fn ge(x: f64, y: f64) -> bool { return x >= y; }
#[inline(always)]
pub fn gt(x: f64, y: f64) -> bool { return x > y; }
#[inline(always)]
pub fn fmax(x: f64, y: f64) -> f64 {
if x.is_NaN() { y }
else if y.is_NaN() { x }
else if x > y { x }
else { y }
}
#[inline(always)]
pub fn fmin(x: f64, y: f64) -> f64 {
if x.is_NaN() { y }
else if y.is_NaN() { x }
else if x < y { x }
else { y }
}
// FIXME (#1999): add is_normal, is_subnormal, and fpclassify