#include <stdio.h>
#include <math.h>

#include "my_rand.h"

#ifdef __ZTC__
#define RAND_MAX 32767
#else ifndef RAND_MAX
#define RAND_MAX  0x3FFFFFFF  /* 2^32 - 1  */
#endif


int irand_range(lo,hi)
    int lo;
    int hi;
{
    int r = rand();
    int dif = hi-lo;
    int top = RAND_MAX;
    int top_mod;
    if ( dif < 0 ) {
        fprintf(stderr,"range too wide in irand_range(%d,%d)\n",lo,hi);
        exit(1);
        }
    top_mod = top % dif;
    if ( top_mod != dif-1 ) top = ( top - top_mod ) - 1;
    while ( r > top ) r = rand();
    return ( r % dif )  +  lo;
}

double drand_range(lo,hi)
    double lo;
    double hi;
{
    int r = rand();
    return ( ((hi-lo)*r) / ((double)RAND_MAX) ) + lo;
}