72 lines
2.3 KiB
C
72 lines
2.3 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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* 2021 Evan Nemerson <evan@nemerson.com>
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*/
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#if !defined(SIMDE_ARM_SVE_PTEST_H)
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#define SIMDE_ARM_SVE_PTEST_H
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#include "types.h"
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HEDLEY_DIAGNOSTIC_PUSH
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SIMDE_DISABLE_UNWANTED_DIAGNOSTICS
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SIMDE_FUNCTION_ATTRIBUTES
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simde_bool
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simde_svptest_first(simde_svbool_t pg, simde_svbool_t op) {
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#if defined(SIMDE_ARM_SVE_NATIVE)
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return svptest_first(pg, op);
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#elif defined(SIMDE_X86_AVX512BW_NATIVE)
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if (HEDLEY_LIKELY(pg.value & 1))
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return op.value & 1;
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if (pg.value == 0 || op.value == 0)
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return 0;
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#if defined(_MSC_VER)
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unsigned long r = 0;
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_BitScanForward64(&r, HEDLEY_STATIC_CAST(uint64_t, pg.value));
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return (op.value >> r) & 1;
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#else
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return (op.value >> __builtin_ctzll(HEDLEY_STATIC_CAST(unsigned long long, pg.value))) & 1;
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#endif
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#else
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for (int i = 0 ; i < HEDLEY_STATIC_CAST(int, simde_svcntb()) ; i++) {
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if (pg.values_i8[i]) {
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return !!op.values_i8[i];
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}
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}
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return 0;
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#endif
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}
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#if defined(SIMDE_ARM_SVE_ENABLE_NATIVE_ALIASES)
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#undef simde_svptest_first
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#define svptest_first(pg, op) simde_svptest_first(pg, op)
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#endif
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HEDLEY_DIAGNOSTIC_POP
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#endif /* SIMDE_ARM_SVE_PTEST_H */
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