vendor/libm-0.1.4/src/math/fdimf.rs

   1 use core::f32;
   2
   3 /// Positive difference (f32)
   4 ///
   5 /// Determines the positive difference between arguments, returning:
   6 /// * x - y     if x > y, or
   7 /// * +0        if x <= y, or
   8 /// * NAN       if either argument is NAN.
   9 ///
  10 /// A range error may occur.
  11 #[inline]
  12 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
  13 pub fn fdimf(x: f32, y: f32) -> f32 {
  14     if x.is_nan() {
  15         x
  16     } else if y.is_nan() {
  17         y
  18     } else if x > y {
  19         x - y
  20     } else {
  21         0.0
  22     }
  23 }