2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A/* Copyright (c) 1988 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#pragma weak _gethz = gethz
2N/A
2N/A#include "lint.h"
2N/A#include <stdio.h>
2N/A#include <ctype.h>
2N/A#include <stdlib.h>
2N/A
2N/A/*
2N/A * gethz -- get the value of the clock hertz from the environment.
2N/A *
2N/A * return the clock hertz value if the string "HZ" in the environment is:
2N/A * 1) Composed entirely of numbers.
2N/A * 2) Not equal to zero.
2N/A * Otherwise 0 is returned.
2N/A */
2N/Aint
2N/Agethz(void)
2N/A{
2N/A char *sptr, *cptr;
2N/A
2N/A if ((sptr = getenv("HZ")) == NULL) {
2N/A return (0);
2N/A } else {
2N/A cptr = sptr;
2N/A
2N/A /* Check that all characters are numeric */
2N/A while (*cptr) {
2N/A if (!isdigit((unsigned char)*cptr))
2N/A return (0);
2N/A cptr++;
2N/A }
2N/A return (atoi(sptr));
2N/A }
2N/A}