diff options
Diffstat (limited to '')
| -rw-r--r-- | vendor/compiler_builtins/libm/src/math/fdim.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/vendor/compiler_builtins/libm/src/math/fdim.rs b/vendor/compiler_builtins/libm/src/math/fdim.rs new file mode 100644 index 000000000..014930097 --- /dev/null +++ b/vendor/compiler_builtins/libm/src/math/fdim.rs @@ -0,0 +1,22 @@ +use core::f64; + +/// Positive difference (f64) +/// +/// Determines the positive difference between arguments, returning: +/// * x - y if x > y, or +/// * +0 if x <= y, or +/// * NAN if either argument is NAN. +/// +/// A range error may occur. +#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)] +pub fn fdim(x: f64, y: f64) -> f64 { + if x.is_nan() { + x + } else if y.is_nan() { + y + } else if x > y { + x - y + } else { + 0.0 + } +} |