musl-tcc/src/prng/drand48.c

18 lines
278 B
C

#include <stdlib.h>
#include <inttypes.h>
#include "rand48.h"
double erand48(unsigned short s[3])
{
union {
uint64_t u;
double f;
} x = { 0x3ff0000000000000ULL | __rand48_step(s, __seed48+3)<<4 };
return x.f - 1.0;
}
double drand48(void)
{
return erand48(__seed48);
}