drand48_r, erand48_r, lrand48_r, nrand48_r, mrand48_r, jrand48_r, srand48_r, seed48_r, lcong48_r - generate uniformly distributed pseudo-random numbers reentrantly
#include <stdlib.h> int drand48_r(struct drand48_data *buffer, double *result); int erand48_r(unsigned short xsubi[3],
struct drand48_data *buffer, double *result); int lrand48_r(struct drand48_data *buffer, long int *result); int nrand48_r(unsigned short int xsubi[3],
struct drand48_data *buffer, long int *result); int mrand48_r(struct drand48_data *buffer,long int *result); int jrand48_r(unsigned short int xsubi[3],
struct drand48_data *buffer, long int *result); int srand48_r(long int seedval, struct drand48_data *buffer); int seed48_r(unsigned short int seed16v[3],
struct drand48_data *buffer); int lcong48_r(unsigned short int param[7],
struct drand48_data *buffer);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
All functions shown above: _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE
Before the first use, this struct must be initialized, for example, by filling it with zeros, or by calling one of the functions srand48_r(), seed48_r(), or lcong48_r().
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