usr/src/usr.bin/pascal/libpc/PRED.c

/* Copyright (c) 1979 Regents of the University of California */

static char sccsid[] = "@(#)PRED.c 1.1 %G%";

#include "h01errs.h"

PRED(value, lower, upper)

        int     value;
        int     lower;
        int     upper;
{
        value--;
        if (value < lower || value > upper) {
                ERROR(ERANGE, value);
                return;
        }
        return  value;
}