73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Copyright:
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* 2020 Evan Nemerson <evan@nemerson.com>
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* 2020 Himanshi Mathur <himanshi18037@iiitd.ac.in>
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*/
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/* This is a SIMDe extension which is not part of AVX-512. It exists
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* because a lot of numerical methods in SIMDe have algoriths which do
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* something like:
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*
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* float sgn = input < 0 ? -1 : 1;
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* ...
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* return res * sgn;
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*
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* Which can be replaced with a much more efficient call to xorsign:
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*
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* return simde_x_mm512_xorsign_ps(res, input);
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*
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* While this was originally intended for use in SIMDe, please feel
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* free to use it in your code.
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*/
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#if !defined(SIMDE_X86_AVX512_XORSIGN_H)
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#define SIMDE_X86_AVX512_XORSIGN_H
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#include "types.h"
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#include "mov.h"
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#include "and.h"
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#include "xor.h"
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#include "set1.h"
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HEDLEY_DIAGNOSTIC_PUSH
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SIMDE_DISABLE_UNWANTED_DIAGNOSTICS
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SIMDE_BEGIN_DECLS_
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SIMDE_FUNCTION_ATTRIBUTES
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simde__m512
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simde_x_mm512_xorsign_ps(simde__m512 dest, simde__m512 src) {
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return simde_mm512_xor_ps(simde_mm512_and_ps(simde_mm512_set1_ps(-0.0f), src), dest);
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}
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SIMDE_FUNCTION_ATTRIBUTES
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simde__m512d
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simde_x_mm512_xorsign_pd(simde__m512d dest, simde__m512d src) {
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return simde_mm512_xor_pd(simde_mm512_and_pd(simde_mm512_set1_pd(-0.0), src), dest);
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}
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SIMDE_END_DECLS_
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HEDLEY_DIAGNOSTIC_POP
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#endif /* !defined(SIMDE_X86_AVX512_XORSIGN_H) */
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