205fd63881
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> (Merged from https://github.com/openssl/openssl/pull/5105)
31 lines
939 B
C
31 lines
939 B
C
/*
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* Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright 2016 Cryptography Research, Inc.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*
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* Originally written by Mike Hamburg
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*/
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#ifndef __ARCH_ARCH_32_ARCH_INTRINSICS_H__
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# define __ARCH_ARCH_32_ARCH_INTRINSICS_H__
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# define ARCH_WORD_BITS 32
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static __inline__ __attribute((always_inline, unused))
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uint32_t word_is_zero(uint32_t a)
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{
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/* let's hope the compiler isn't clever enough to optimize this. */
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return (((uint64_t)a) - 1) >> 32;
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}
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static __inline__ __attribute((always_inline, unused))
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uint64_t widemul(uint32_t a, uint32_t b)
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{
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return ((uint64_t)a) * b;
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}
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#endif /* __ARCH_ARM_32_ARCH_INTRINSICS_H__ */
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