1995-10-23 01:34:17 +00:00
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Paul Borman at Krystal Technologies.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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2002-03-22 21:53:29 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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2005-09-12 19:52:42 +00:00
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#include <ctype.h>
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1994-09-24 15:59:33 +00:00
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#include <stdio.h>
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2004-07-29 06:16:19 +00:00
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#include <runetype.h>
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1994-09-24 15:59:33 +00:00
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2002-08-21 16:20:02 +00:00
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__ct_rune_t
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1994-09-24 15:59:33 +00:00
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___tolower(c)
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2002-08-21 16:20:02 +00:00
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__ct_rune_t c;
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1994-09-24 15:59:33 +00:00
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{
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2004-05-09 13:04:49 +00:00
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size_t lim;
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2004-06-23 07:01:44 +00:00
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_RuneRange *rr = &_CurrentRuneLocale->__maplower_ext;
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2004-05-09 13:04:49 +00:00
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_RuneEntry *base, *re;
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1994-09-24 15:59:33 +00:00
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1996-03-25 13:43:24 +00:00
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if (c < 0 || c == EOF)
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return(c);
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2004-05-09 13:04:49 +00:00
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/* Binary search -- see bsearch.c for explanation. */
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2004-06-23 07:01:44 +00:00
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base = rr->__ranges;
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for (lim = rr->__nranges; lim != 0; lim >>= 1) {
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2004-05-09 13:04:49 +00:00
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re = base + (lim >> 1);
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2004-06-23 07:01:44 +00:00
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if (re->__min <= c && c <= re->__max)
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return (re->__map + c - re->__min);
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else if (c > re->__max) {
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2004-05-09 13:04:49 +00:00
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base = re + 1;
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lim--;
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}
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1994-09-24 15:59:33 +00:00
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}
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2000-06-03 12:24:08 +00:00
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1994-09-24 15:59:33 +00:00
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return(c);
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}
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