crypto/ec/curve448/arch_32/arch_intrinsics.h

   1 /*
   2  * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  * Copyright 2016 Cryptography Research, Inc.
   4  *
   5  * Licensed under the OpenSSL license (the "License").  You may not use
   6  * this file except in compliance with the License.  You can obtain a copy
   7  * in the file LICENSE in the source distribution or at
   8  * https://www.openssl.org/source/license.html
   9  *
  10  * Originally written by Mike Hamburg
  11  */
  12
  13 #ifndef HEADER_ARCH_32_ARCH_INTRINSICS_H
  14 # define HEADER_ARCH_32_ARCH_INTRINSICS_H
  15
  16 #include "internal/constant_time_locl.h"
  17
  18 # define ARCH_WORD_BITS 32
  19
  20 #define word_is_zero(a)     constant_time_is_zero_32(a)
  21
  22 static ossl_inline uint64_t widemul(uint32_t a, uint32_t b)
  23 {
  24     return ((uint64_t)a) * b;
  25 }
  26
  27 #endif                          /* HEADER_ARCH_32_ARCH_INTRINSICS_H */