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This commit is contained in:
Philippe Teuwen 2019-03-10 00:00:59 +01:00
commit 0373696662
483 changed files with 56514 additions and 52451 deletions
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16
common/prng.c
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@ -6,7 +6,8 @@
#include "prng.h"
#define rot(x,k) (((x)<<(k))|((x)>>(32-(k))))
uint32_t burtle_get_mod( prng_ctx *x ) {
uint32_t burtle_get_mod(prng_ctx *x)
{
uint32_t e = x->a - rot(x->b, 21);
x->a = x->b ^ rot(x->c, 19);
x->b = x->c + rot(x->d, 6);
@ -15,24 +16,27 @@ uint32_t burtle_get_mod( prng_ctx *x ) {
return x->d;
}
void burtle_init_mod(prng_ctx *x, uint32_t seed ) {
void burtle_init_mod(prng_ctx *x, uint32_t seed)
{
x->a = 0xf1ea5eed;
x->b = x->c = x->d = seed;
for (uint8_t i=0; i < 42; ++i) {
for (uint8_t i = 0; i < 42; ++i) {
(void)burtle_get_mod(x);
}
}
void burtle_init(prng_ctx *x, uint32_t seed ) {
void burtle_init(prng_ctx *x, uint32_t seed)
{
uint32_t i;
x->a = 0xf1ea5eed, x->b = x->c = x->d = seed;
for (i=0; i < 20; ++i) {
for (i = 0; i < 20; ++i) {
(void)burtle_get_mod(x);
}
}
uint32_t GetSimplePrng( uint32_t seed ){
uint32_t GetSimplePrng(uint32_t seed)
{
seed *= 0x19660D;
seed += 0x3C6EF35F;
return seed;