fast image operations
Diffstat (limited to 'src/math.rs')
| -rw-r--r-- | src/math.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/math.rs b/src/math.rs new file mode 100644 index 0000000..08e8457 --- /dev/null +++ b/src/math.rs @@ -0,0 +1,22 @@ +//! utility math +/// Calculates `a * b + c`, with hardware support if possible. +#[allow(clippy::suboptimal_flops)] +pub fn madd(a: f32, b: f32, c: f32) -> f32 { + if cfg!(target_feature = "fma") { + a.mul_add(b, c) + } else { + a * b + c + } +} + +/// helps +pub trait FExt { + /// Calculates `a * b + c`, with hardware support if possible. + fn madd(self, a: f32, b: f32) -> Self; +} + +impl FExt for f32 { + fn madd(self, a: f32, b: f32) -> Self { + madd(self, a, b) + } +} |