diff options
Diffstat (limited to 'src/utils.h')
| -rw-r--r-- | src/utils.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/utils.h b/src/utils.h index db6f7a8..c165e2c 100644 --- a/src/utils.h +++ b/src/utils.h @@ -38,6 +38,10 @@ typedef enum FTError { #define TOGGLE_BIT(b, n) (b ^ (0x1 << n)) #define HAS_FLAG(v, f) ((v & f) == f) +// https://en.wikipedia.org/wiki/Linear_congruential_generator +#define FT_RANDOM16(seed) (seed = (75 * seed + 74) % 65537) +#define FT_RANDOM32(seed) (seed = (1664525 * seed + 1013904223) % 4294967296) + // Helpful for debugging #define PRINT_VECTOR2(v) printf("%f %f\n", v.x, v.y) #define PRINT_VECTOR3(v) printf("%f %f %f\n", v.x, v.y, v.z) |