24 lines
355 B
C
24 lines
355 B
C
#include "rng.h"
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#include <limits.h>
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#include <stdlib.h>
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#include <sys/time.h>
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void rng_init()
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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srand(tv.tv_usec);
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}
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double rng_double()
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{
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return 2.0 * (double)rand() / (double)INT_MAX - 1.0;
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}
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vec3_t rng_vec3()
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{
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const vec3_t v = { rng_double(), rng_double(), rng_double() };
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return vec3_unit(v);
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}
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