/*************************************************************
 * File: lib/isdigit.c
 * Purpose: Part of C runtime library
 * Author: Phil Bunce (pjb@carmel.com)
 * Revision History:
 *	970304	Start of revision history
 */

/** isdigit(c) returns true if c is decimal digit */
isdigit(c)
int c;
{
if (c >= '0' && c <= '9') return(1);
return(0);
}