/rust/registry/src/index.crates.io-1949cf8c6b5b557f/pic-scale-safe-0.1.5/src/mlaf.rs
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1 | | /* |
2 | | * // Copyright (c) Radzivon Bartoshyk. All rights reserved. |
3 | | * // |
4 | | * // Redistribution and use in source and binary forms, with or without modification, |
5 | | * // are permitted provided that the following conditions are met: |
6 | | * // |
7 | | * // 1. Redistributions of source code must retain the above copyright notice, this |
8 | | * // list of conditions and the following disclaimer. |
9 | | * // |
10 | | * // 2. Redistributions in binary form must reproduce the above copyright notice, |
11 | | * // this list of conditions and the following disclaimer in the documentation |
12 | | * // and/or other materials provided with the distribution. |
13 | | * // |
14 | | * // 3. Neither the name of the copyright holder nor the names of its |
15 | | * // contributors may be used to endorse or promote products derived from |
16 | | * // this software without specific prior written permission. |
17 | | * // |
18 | | * // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
19 | | * // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | | * // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
21 | | * // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
22 | | * // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
23 | | * // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
24 | | * // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
25 | | * // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
26 | | * // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | | * // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | | */ |
29 | | use num_traits::MulAdd; |
30 | | use std::ops::{Add, Mul}; |
31 | | |
32 | | #[cfg(any( |
33 | | all( |
34 | | any(target_arch = "x86", target_arch = "x86_64"), |
35 | | target_feature = "fma" |
36 | | ), |
37 | | all(target_arch = "aarch64", target_feature = "neon") |
38 | | ))] |
39 | | #[inline(always)] |
40 | | pub(crate) fn mlaf<T: Copy + Mul<T, Output = T> + Add<T, Output = T> + MulAdd<T, Output = T>>( |
41 | | acc: T, |
42 | | a: T, |
43 | | b: T, |
44 | | ) -> T { |
45 | | MulAdd::mul_add(a, b, acc) |
46 | | } |
47 | | |
48 | | #[inline(always)] |
49 | | #[cfg(not(any( |
50 | | all( |
51 | | any(target_arch = "x86", target_arch = "x86_64"), |
52 | | target_feature = "fma" |
53 | | ), |
54 | | all(target_arch = "aarch64", target_feature = "neon") |
55 | | )))] |
56 | 0 | pub(crate) fn mlaf<T: Copy + Mul<T, Output = T> + Add<T, Output = T> + MulAdd<T, Output = T>>( |
57 | 0 | acc: T, |
58 | 0 | a: T, |
59 | 0 | b: T, |
60 | 0 | ) -> T { |
61 | 0 | acc + a * b |
62 | 0 | } |