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allow external define of MP_GEN_RANDOM

This commit is contained in:
Steffen Jaeckel 2017-04-09 00:44:01 +02:00
parent 393a527364
commit c17c47715a
1 changed files with 5 additions and 7 deletions
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12
tommath.h
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@ -94,16 +94,14 @@ extern "C" {
typedef mp_digit mp_min_u32;
#endif
/* platforms that can use a better rand function */
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
#define MP_USE_ALT_RAND 1
#endif
/* use arc4random on platforms that support it */
#ifdef MP_USE_ALT_RAND
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
#define MP_GEN_RANDOM() arc4random()
#define MP_GEN_RANDOM_MAX 0xffffffff
#else
#endif
/* use rand() as fall-back if there's no better rand function */
#ifndef MP_GEN_RANDOM
#define MP_GEN_RANDOM() rand()
#define MP_GEN_RANDOM_MAX RAND_MAX
#endif