runif.h

Go to the documentation of this file.

#ifndef CSNIP_RUNIF_H
#define CSNIP_RUNIF_H
 
#include <csnip/rng.h>
 
/* Generation of integer uniform random variables
 *
 * Each variant generates uniform integer random variables in { 0, 1,
 * ..., max }  (the upper bound, max, is inclusive).
 *
 * The generated random variables are uniform, provided that the
 * underlying random number generator produces uniform numbers.
 */
unsigned long long int csnip_runif_getull(const csnip_rng* R,
                unsigned long long int max);
unsigned long csnip_runif_getul(const csnip_rng* R,
            unsigned long max);
unsigned int csnip_runif_getu(const csnip_rng* R, unsigned int max);
 
#define csnip_runif_Geti(R, max) \
        _Generic((max), \
            unsigned long long int: \
              csnip_runif_getull((R), (unsigned long long int)(max)), \
            long long int: \
              (long long int)csnip_runif_getull((R), (long long int)(max)), \
            unsigned long int: \
              csnip_runif_getul((R), (unsigned long int)(max)), \
            long int: \
              (long int)csnip_runif_getul((R), (long int)(max)), \
            unsigned int: \
              csnip_runif_getu((R), (unsigned int)(max)), \
            int: \
              (int)csnip_runif_getu((R), (int)(max)), \
            default: \
              csnip_runif_getu((R), (unsigned int)(max)))
 
/* Generation of floating point uniform random variables */
long double csnip_runif_getld(const csnip_rng* R, long double lim);
double csnip_runif_getd(const csnip_rng* R, double lim);
float csnip_runif_getf(const csnip_rng* R, float lim);
 
#define csnip_runif_Getf(R, lim) \
        _Generic((lim), \
            long double: csnip_runif_getld((R), (lim)), \
            double: csnip_runif_getd((R), (lim)), \
            float: csnip_runif_getf((R), (lim)))
 
#endif /* CSNIP_RUNIF_H */
 
#if defined(CSNIP_SHORT_NAMES) && !defined(CSNIP_RUNIF_HAVE_SHORT_NAMES)
#define runif_getull        csnip_runif_getull
#define runif_getul     csnip_runif_getul
#define runif_getu      csnip_runif_getu
#define runif_Geti      csnip_runif_Geti
#define runif_getld     csnip_runif_getld
#define runif_getd      csnip_runif_getd
#define runif_getf      csnip_runif_getf
#define runif_Getf      csnip_runif_Getf
#define CSNIP_RUNIF_HAVE_SHORT_NAMES
#endif /* CSNIP_SHORT_NAMES && !CSNIP_RUNIF_HAVE_SHORT_NAMES */