GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 5.3 |
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lcong48_r(3) |
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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);
These functions are the reentrant analogs of the functions described in drand48(3). Instead of modifying the global random generator state, they use the supplied data buffer.
Before the first use, this struct must be initialized, e.g. by filling it with zeroes, or by calling one of the functions srand48_r(), seed48_r(), or lcong48_r().
The return value is 0.
These functions are GNU extensions and are not portable.
drand48(3), rand(3), random(3)
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lcong48_r(3) | |