38 #ifndef _MCEXTREME_STDC_RAND_H 39 #define _MCEXTREME_STDC_RAND_H 43 #define __device__ static inline 45 #define MCX_RNG_NAME "POSIX Multi-threaded RNG" 47 #define RAND_BUF_LEN 3 //register arrays 48 #define RAND_SEED_WORD_LEN 2 50 typedef unsigned int uint;
56 typedef unsigned short RandType;
59 __device__
float rand_uniform01(RandType t[RAND_BUF_LEN]);
60 __device__
void rng_init(RandType t[RAND_BUF_LEN], RandType tnew[RAND_BUF_LEN], uint* n_seed,
int idx);
61 __device__
void rand_need_more(RandType t[RAND_BUF_LEN], RandType tbuf[RAND_BUF_LEN]);
71 #ifdef MMC_USE_SSE_MATH 72 __device__
void rand_next_aangle_sincos(RandType t[RAND_BUF_LEN],
float* si,
float* co);
73 __device__
float rand_next_scatlen_ps(RandType t[RAND_BUF_LEN]);
__device__ float rand_next_scatlen(RandType t[RAND_BUF_LEN])
generate [0,1] random number for the next scattering length
Definition: mmc_rand_common.h:46
__device__ float rand_do_roulette(RandType t[RAND_BUF_LEN])
generate random number for the next zenith angle
Definition: mmc_rand_common.h:62
__device__ float rand_next_zangle(RandType t[RAND_BUF_LEN])
generate random number for the next zenith angle
Definition: mmc_rand_common.h:54
__device__ float rand_next_aangle(RandType t[RAND_BUF_LEN])
generate [0,1] random number for the next arimuthal angle
Definition: mmc_rand_common.h:50
Windows 32 port of drand48_r random number generator from libgw2c.
__device__ float rand_next_reflect(RandType t[RAND_BUF_LEN])
generate random number for reflection test
Definition: mmc_rand_common.h:58