1 | #[cfg (not(all(any(target_arch = "x86" , target_arch = "x86_64" ), feature = "simd" )))] |
2 | #[inline (always)] |
3 | pub fn fract(value: f32) -> f32 { |
4 | value - super::trunc(value) |
5 | } |
6 | |
7 | #[cfg (all(any(target_arch = "x86" , target_arch = "x86_64" ), feature = "simd" ))] |
8 | #[inline (always)] |
9 | pub fn fract(value: f32) -> f32 { |
10 | #[cfg (target_arch = "x86" )] |
11 | use core::arch::x86::*; |
12 | #[cfg (target_arch = "x86_64" )] |
13 | use core::arch::x86_64::*; |
14 | |
15 | unsafe { |
16 | let packed: __m128 = _mm_set_ss(value); |
17 | _mm_cvtss_f32(_mm_sub_ps(a:packed, b:_mm_cvtepi32_ps(_mm_cvttps_epi32(packed)))) |
18 | } |
19 | } |
20 | |