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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
2N/A */
2N/A
2N/A/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A/*
2N/A * Portions of this source code were derived from Berkeley 4.3 BSD
2N/A * under license from the Regents of the University of California.
2N/A */
2N/A
2N/A#include "lint.h"
2N/A#include <sys/types.h>
2N/A#include <strings.h>
2N/A
2N/A/*
2N/A * This array is designed for mapping upper and lower case letter
2N/A * together for a case independent comparison. The mappings are
2N/A * based upon ascii character sequences.
2N/A */
2N/A
2N/Aextern const char strcase_charmap[];
2N/A
2N/Aint
2N/Aascii_strncasecmp(const char *s1, const char *s2, size_t n)
2N/A{
2N/A const unsigned char *cm = (const unsigned char *)strcase_charmap;
2N/A const unsigned char *us1 = (const unsigned char *)s1;
2N/A const unsigned char *us2 = (const unsigned char *)s2;
2N/A
2N/A while (n != 0 && cm[*us1] == cm[*us2++]) {
2N/A if (*us1++ == '\0')
2N/A return (0);
2N/A n--;
2N/A }
2N/A return (n == 0 ? 0 : cm[*us1] - cm[*(us2 - 1)]);
2N/A}