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comparison src/impl/fallback.c @ 31:bf6ad516f1e6

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Backed out changeset c6c99ab1088a
author Paper <paper@tflc.us>
date Fri, 25 Apr 2025 17:40:33 -0400
parents c6c99ab1088a
children 8b5e0974fd41
comparison
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30:641d8c79b1da 31:bf6ad516f1e6
1 /**
2 * vec - a tiny SIMD vector library in C99
3 *
4 * Copyright (c) 2024 Paper
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 **/
24
25 #include "vec/impl/fallback.h" 1 #include "vec/impl/fallback.h"
26 2
27 #include <string.h> 3 #include <string.h>
28 4
29 // Fallback implementations - this is what an implementation should use if it 5 // Fallback implementations - this is what an implementation should use if it
30 // doesn't support a specific function *and* the actual representation in 6 // doesn't support a specific function *and* the actual representation in
31 // memory is unknown or yields incorrect results from the generic functions. 7 // memory is unknown or yields incorrect results from the generic functions.
32 // This is *extremely* unlikely; for x86 the layout is exactly the same in 8 // This is *extremely* unlikely; for x86 the layout is exactly the same in
33 // memory as the generic functions (i.e. it is literally stored as an array of 9 // memory as the generic functions (i.e. it is literally stored as an array of
34 // integers). This is also true for AltiVec. This is likely true for NEON as well, 10 // integers). This is likely true for AltiVec and NEON as well, but those
35 // but that isn't tested for now. 11 // aren't tested for now.
36 12
37 #define VEC_FALLBACK_OPERATION(op, sign, csign, bits, size) \ 13 #define VEC_FALLBACK_OPERATION(op, sign, csign, bits, size) \
38 do { \ 14 do { \
39 V##csign##INT##bits##x##size##_ALIGNED_ARRAY(varr1); \ 15 V##csign##INT##bits##x##size##_ALIGNED_ARRAY(varr1); \
40 V##csign##INT##bits##x##size##_ALIGNED_ARRAY(varr2); \ 16 V##csign##INT##bits##x##size##_ALIGNED_ARRAY(varr2); \