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/*--- Chris S.: June 10, 1999 */
/*--- reads in a generator type as an integer */
/*---adding 'int gentype' and read in + error handling */
/*--- generator numeral range is fix-set to 0-5 ? */
/*--- should 5 be change to some variable MAX_GEN_NUMBER ? */
#include <stdio.h>
#include <stdlib.h>
#include "cputime.h"
#include "interface.h"
#define TIMING_TRIAL_SIZE 1000000
#define PARAM 0
main()
{
int i;
int *gen;
double temp1, temp2, temp3, temp4;
double temp_mult = TIMING_TRIAL_SIZE/1.0e6;
/*--- */
int gentype;
scanf("%d\n", &gentype);
if((gentype < 0) || (gentype > 5)) /*--- range to be adjusted if needed */
{
printf("\nGenerator numeral out of range.\n\t...Exiting\n");
exit(1);
}
/*--- */
gen = init_rng(gentype,0,1,0,PARAM);
/*--- Printing generator and stream information */
/* print_rng(gen); */
temp1 = cputime();
for(i=0; i<TIMING_TRIAL_SIZE; i++)
get_rn_int(gen);
temp2 = cputime();
for(i=0; i<TIMING_TRIAL_SIZE; i++)
get_rn_flt(gen);
temp3 = cputime();
for(i=0; i<TIMING_TRIAL_SIZE; i++)
get_rn_dbl(gen);
temp4 = cputime();
if(temp2-temp1 < 1.0e-15 || temp3-temp2 < 1.0e-15 || temp4-temp3 < 1.0e-15)
{
printf("Timing Information not available/not accurate enough.\n\t...Exiting\n");
exit(1);
}
/* The next line is just used to ensure that the optimization does not remove the call to the RNG. Nothing is really printed. */
fprintf(stderr,"Last random number generated\n", get_rn_dbl(gen));
printf("\nUser + System time Information (Note: MRS = Million Random Numbers Per Second)\n");
printf("\tInteger generator:\t Time = %7.3f seconds => %8.4f MRS\n",
temp2-temp1, temp_mult/(temp2-temp1));
printf("\tFloat generator:\t Time = %7.3f seconds => %8.4f MRS\n",
temp3-temp2, temp_mult/(temp3-temp2));
printf("\tDouble generator:\t Time = %7.3f seconds => %8.4f MRS\n",
temp4-temp3, temp_mult/(temp4-temp3));
putchar('\n');
}
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