diff options
Diffstat (limited to 'source/kit/mersenne_twister_64.c')
| -rw-r--r-- | source/kit/mersenne_twister_64.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/source/kit/mersenne_twister_64.c b/source/kit/mersenne_twister_64.c index 9ab39d3..c8bbbe2 100644 --- a/source/kit/mersenne_twister_64.c +++ b/source/kit/mersenne_twister_64.c @@ -2,9 +2,12 @@ #include "time.h" -void kit_mt64_init(kit_mt64_state_t *state, uint64_t seed) { - state->mt[0] = seed; - for (state->index = 1; state->index < KIT_MT64_N; state->index++) +void kit_mt64_init_array(kit_mt64_state_t *const state, + ptrdiff_t const size, + uint64_t const *const seed) { + for (ptrdiff_t i = 0; i < size && i < KIT_MT64_N; i++) + state->mt[i] = seed[i]; + for (state->index = size; state->index < KIT_MT64_N; state->index++) state->mt[state->index] = (6364136223846793005ull * (state->mt[state->index - 1] ^ (state->mt[state->index - 1] >> @@ -12,7 +15,12 @@ void kit_mt64_init(kit_mt64_state_t *state, uint64_t seed) { state->index); } -uint64_t kit_mt64_generate(kit_mt64_state_t *state) { +void kit_mt64_init(kit_mt64_state_t *const state, + uint64_t const seed) { + kit_mt64_init_array(state, 1, &seed); +} + +uint64_t kit_mt64_generate(kit_mt64_state_t *const state) { static uint64_t const mag01[2] = { 0ull, 0xB5026F5AA96619E9ull }; int i; |