/*****************************************************************************/
/*                                                                           */
/* UNIT: NTL0_overlaps  (Level 0 library routine)                            */
/*                                                                           */
/* Author: Nikola Stojanovic                                                 */
/*                                                                           */
/* Revision:    27 JUN 94   Version 1.0                                      */
/*                                                                           */
/* Function:                                                                 */
/*                                                                           */
/*   Procedure checks whether two provided intervals overlap or not; returns */
/* 1 if they do, 0 if not                                                    */
/*                                                                           */
/*****************************************************************************/


#include "ntl0.h"


/*****************************************************************************/

int NTL0_overlaps (long int low1, long int high1,
                   long int low2, long int high2)
{
 if ((low1 <= low2) && (high1 >= low2)) return 1;
 else if ((low1 <= high2) && (high1 >= high2)) return 1;
 else if ((low1 >= low2) && (high1 <= high2)) return 1;
 else return 0;
}