| #ifndef _GOOMTOOLS_H |
| #define _GOOMTOOLS_H |
| |
| /** |
| * Random number generator wrapper for faster random number. |
| */ |
| |
| #define GOOM_NB_RAND 0x10000 |
| |
| typedef struct _GOOM_RANDOM { |
| int array[GOOM_NB_RAND]; |
| unsigned short pos; |
| } GoomRandom; |
| |
| GoomRandom *goom_random_init(int i); |
| void goom_random_free(GoomRandom *grandom); |
| |
| inline static int goom_random(GoomRandom *grandom) { |
| |
| grandom->pos++; /* works because pos is an unsigned short */ |
| return grandom->array[grandom->pos]; |
| } |
| |
| inline static int goom_irand(GoomRandom *grandom, int i) { |
| |
| grandom->pos++; |
| return grandom->array[grandom->pos] % i; |
| } |
| |
| /* called to change the specified number of value in the array, so that the array does not remain the same*/ |
| void goom_random_update_array(GoomRandom *grandom, int numberOfValuesToChange); |
| |
| #endif |
