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/***************************************************************************/
/* ____Demonstrates converting code to SPRNG____ */
/* The original random number call is to 'myrandom'. We change it to call */
/* SPRNG by defining a macro. */
/* The lines between the '#ifdef CONVERT' and the '#else' are the
newly added lines. Those lines between the '#else' and the '#endif'
are theoriginal lines that need to be deleted.
*/
/***************************************************************************/
#include <stdio.h>
#define CONVERT /* used to set on the macro 'myrandom --> sprng' */
#ifdef CONVERT
#define SIMPLE_SPRNG /* simple interface */
#include "sprng.h" /* SPRNG header file */
#define myrandom sprng /* we define this macro to make SPRNG calls*/
#endif
#define SEED 985456376
double myrandom();
main()
{
int seed, i;
double rn;
int gtype; /*--- */
#ifdef CONVERT
/*--- reading in a generator type */
#include "gen_types_menu.h"
printf("Type in a generator type (integers: 0,1,2,3,4,5): ");
scanf("%d", >ype);
/************************** Initialization *******************************/
/******* We add the following optional initialization lines **************/
init_sprng(gtype,SEED,SPRNG_DEFAULT); /* initialize stream */
printf("Print information about random number stream:\n");
print_sprng();
#else
/* Old initialization lines*/
#endif
/*********************** print random numbers ****************************/
printf("Printing 3 random numbers in [0,1):\n");
for (i=0;i<3;i++)
{
rn = myrandom(); /* generate double precision random number */
printf("%f\n", rn);
}
}
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