/* See {Random.h} */
#include <Random.h>

/* Last edited on 2024-11-14 05:12:51 by stolfi */

#define Random_C_author \
  "Created by J. Stolfi on 2007-02-01."

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>

#include <affirm.h>

struct Random_t { struct drand48_data state; };

Random_t *MakeRandomSource(long int seed)
  { Random_t *coins = (Random_t *)notnull(malloc(sizeof(Random_t)), "no mem");
    srand48_r(seed, &(coins->state));
    return coins;
  }

double RandomDouble(Random_t *coins, double lo, double hi)
  { double x;
    drand48_r(&(coins->state), &x);
    return lo + (hi - lo)*x;
  }