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no more repeating code in xoshiro/xoroshiro

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timerix
2022-10-24 04:32:06 +06:00
parent f33804f5b8
commit 66935ae437
21 changed files with 214 additions and 204 deletions
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14
src/random/xoroshiro/64bitValue/xoroshiro128plus.c
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@@ -6,7 +6,7 @@ worldwide. This software is distributed without any warranty.
See <http://creativecommons.org/publicdomain/zero/1.0/>. */
#include "../../krandom.h"
#include "xoroshiro128.h"
/* This is xoroshiro128+ 1.0, our best and fastest small-state generator
for floating-point numbers, but its state space is large enough only
@@ -36,12 +36,8 @@ static inline uint64 rotl(const uint64 x, int k) {
return (x << k) | (x >> (64 - k));
}
typedef union {
uint32 s[2];
} _state_t;
uint64 xoroshiro128plus_next(void* _state){
_state_t* state=_state;
xoroshiro128_state* state=_state;
const uint64 s0 = state->s[0];
uint64 s1 = state->s[1];
const uint64 result = s0 + s1;
@@ -53,9 +49,9 @@ uint64 xoroshiro128plus_next(void* _state){
return result;
}
void* xoroshiro128plus_init(uint64 seed){
_state_t* state=malloc(sizeof(_state_t));
splitmix64_state splitmix=splitmix64_init(seed);
void* xoroshiro128_init(uint64 seed){
xoroshiro128_state* state=malloc(sizeof(xoroshiro128_state));
splitmix64_state* splitmix=splitmix64_init(seed);
state->s[0]=splitmix64_next(splitmix);
state->s[1]=splitmix64_next(splitmix);
return state;