diff options
Diffstat (limited to 'Source/JavaScriptCore/wtf/RandomNumberSeed.h')
| -rw-r--r-- | Source/JavaScriptCore/wtf/RandomNumberSeed.h | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/Source/JavaScriptCore/wtf/RandomNumberSeed.h b/Source/JavaScriptCore/wtf/RandomNumberSeed.h index 9ea7c71..0703abf 100644 --- a/Source/JavaScriptCore/wtf/RandomNumberSeed.h +++ b/Source/JavaScriptCore/wtf/RandomNumberSeed.h @@ -38,7 +38,7 @@ #include <unistd.h> #endif -#if OS(WINCE) +#if USE(MERSENNE_TWISTER_19937) extern "C" { void init_by_array(unsigned long init_key[],int key_length); } @@ -54,14 +54,6 @@ inline void initializeRandomNumberGenerator() #elif OS(WINCE) // initialize rand() srand(GetTickCount()); - - // use rand() to initialize the real RNG - unsigned long initializationBuffer[4]; - initializationBuffer[0] = (rand() << 16) | rand(); - initializationBuffer[1] = (rand() << 16) | rand(); - initializationBuffer[2] = (rand() << 16) | rand(); - initializationBuffer[3] = (rand() << 16) | rand(); - init_by_array(initializationBuffer, 4); #elif COMPILER(MSVC) && defined(_CRT_RAND_S) // On Windows we use rand_s which initialises itself #elif PLATFORM(BREWMP) @@ -74,6 +66,16 @@ inline void initializeRandomNumberGenerator() #else srand(static_cast<unsigned>(time(0))); #endif + +#if USE(MERSENNE_TWISTER_19937) + // use rand() to initialize the Mersenne Twister random number generator. + unsigned long initializationBuffer[4]; + initializationBuffer[0] = (rand() << 16) | rand(); + initializationBuffer[1] = (rand() << 16) | rand(); + initializationBuffer[2] = (rand() << 16) | rand(); + initializationBuffer[3] = (rand() << 16) | rand(); + init_by_array(initializationBuffer, 4); +#endif } } |