Flatten the Curve 448 source structure
[openssl.git] / crypto / ec / curve448 / arch_32 / arch_intrinsics.h
1 /* Copyright (c) 2016 Cryptography Research, Inc.
2  * Released under the MIT License.  See LICENSE.txt for license information.
3  */
4
5 #ifndef __ARCH_ARCH_32_ARCH_INTRINSICS_H__
6 #define __ARCH_ARCH_32_ARCH_INTRINSICS_H__
7
8 #define ARCH_WORD_BITS 32
9
10 static __inline__ __attribute((always_inline,unused))
11 uint32_t word_is_zero(uint32_t a) {
12     /* let's hope the compiler isn't clever enough to optimize this. */
13     return (((uint64_t)a)-1)>>32;
14 }
15
16 static __inline__ __attribute((always_inline,unused))
17 uint64_t widemul(uint32_t a, uint32_t b) {
18     return ((uint64_t)a) * b;
19 }
20
21 #endif /* __ARCH_ARM_32_ARCH_INTRINSICS_H__ */
22