diff options
Diffstat (limited to 'pixman/test/utils.h')
| -rw-r--r-- | pixman/test/utils.h | 58 |
1 files changed, 29 insertions, 29 deletions
diff --git a/pixman/test/utils.h b/pixman/test/utils.h index f7ea34c5f..78cf0d16d 100644 --- a/pixman/test/utils.h +++ b/pixman/test/utils.h @@ -4,6 +4,7 @@ #include <assert.h> #include "pixman-private.h" /* For 'inline' definition */ +#include "utils-prng.h" #define ARRAY_LENGTH(A) ((int) (sizeof (A) / sizeof ((A) [0]))) @@ -11,49 +12,44 @@ * taken from POSIX.1-2001 example */ -extern uint32_t lcg_seed; +extern prng_t prng_state_data; +extern prng_t *prng_state; #ifdef USE_OPENMP -#pragma omp threadprivate(lcg_seed) +#pragma omp threadprivate(prng_state_data) +#pragma omp threadprivate(prng_state) #endif static inline uint32_t -lcg_rand (void) +prng_rand (void) { - lcg_seed = lcg_seed * 1103515245 + 12345; - return ((uint32_t)(lcg_seed / 65536) % 32768); + return prng_rand_r (prng_state); } static inline void -lcg_srand (uint32_t seed) +prng_srand (uint32_t seed) { - lcg_seed = seed; + if (!prng_state) + { + /* Without setting a seed, PRNG does not work properly (is just + * returning zeros). So we only initialize the pointer here to + * make sure that 'prng_srand' is always called before any + * other 'prng_*' function. The wrongdoers violating this order + * will get a segfault. */ + prng_state = &prng_state_data; + } + prng_srand_r (prng_state, seed); } static inline uint32_t -lcg_rand_n (int max) +prng_rand_n (int max) { - return lcg_rand () % max; + return prng_rand () % max; } -static inline uint32_t -lcg_rand_N (int max) -{ - uint32_t lo = lcg_rand (); - uint32_t hi = lcg_rand () << 15; - return (lo | hi) % max; -} - -static inline uint32_t -lcg_rand_u32 (void) +static inline void +prng_randmemset (void *buffer, size_t size, prng_randmemset_flags_t flags) { - /* This uses the 10/11 most significant bits from the 3 lcg results - * (and mixes them with the low from the adjacent one). - */ - uint32_t lo = lcg_rand() >> -(32 - 15 - 11 * 2); - uint32_t mid = lcg_rand() << (32 - 15 - 11 * 1); - uint32_t hi = lcg_rand() << (32 - 15 - 11 * 0); - - return (hi ^ mid ^ lo); + prng_randmemset_r (prng_state, buffer, size, flags); } /* CRC 32 computation @@ -69,8 +65,12 @@ compute_crc32_for_image (uint32_t in_crc32, /* Returns TRUE if running on a little endian system */ -pixman_bool_t -is_little_endian (void); +static force_inline pixman_bool_t +is_little_endian (void) +{ + unsigned long endian_check_var = 1; + return *(unsigned char *)&endian_check_var == 1; +} /* perform endian conversion of pixel data */ |