GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/locale/_wcstol.h Lines: 0 44 0.0 %
Date: 2017-11-07 Branches: 0 44 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: _wcstol.h,v 1.3 2015/10/01 02:32:07 guenther Exp $	*/
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/* $NetBSD: _wcstol.h,v 1.2 2003/08/07 16:43:03 agc Exp $ */
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/*-
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 * Copyright (c) 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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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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 * 3. 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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 * Original version ID:
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 * @(#)strtol.c	8.1 (Berkeley) 6/4/93
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 * NetBSD: wcstol.c,v 1.1 2001/09/27 16:30:36 yamt Exp
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 * Citrus: xpg4dl/FreeBSD/lib/libc/locale/wcstol.c,v 1.2 2001/09/21 16:11:41 yamt Exp
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 */
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/*
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 * function template for wcstol, wcstoll and wcstoimax.
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 *
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 * parameters:
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 *	FUNCNAME : function name
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 *      int_type : return type
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 *      MIN_VALUE : lower limit of the return type
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 *      MAX_VALUE : upper limit of the return type
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 */
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int_type
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FUNCNAME(const wchar_t *nptr, wchar_t **endptr, int base)
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{
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	const wchar_t *s;
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	int_type acc, cutoff;
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	wint_t wc;
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	int i;
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	int neg, any, cutlim;
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	/* check base value */
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	if (base && (base < 2 || base > 36)) {
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		errno = EINVAL;
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		return 0;
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	}
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	/*
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	 * Skip white space and pick up leading +/- sign if any.
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	 * If base is 0, allow 0x for hex and 0 for octal, else
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	 * assume decimal; if base is already 16, allow 0x.
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	 */
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	s = nptr;
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	do {
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		wc = (wchar_t) *s++;
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	} while (iswspace(wc));
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	if (wc == L'-') {
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		neg = 1;
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		wc = *s++;
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	} else {
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		neg = 0;
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		if (wc == L'+')
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			wc = *s++;
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	}
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	if ((base == 0 || base == 16) &&
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	    wc == L'0' && (*s == L'x' || *s == L'X')) {
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		wc = s[1];
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		s += 2;
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		base = 16;
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	}
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	if (base == 0)
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		base = wc == L'0' ? 8 : 10;
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	/*
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	 * See strtol for comments as to the logic used.
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	 */
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	cutoff = neg ? MIN_VALUE : MAX_VALUE;
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	cutlim = (int)(cutoff % base);
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	cutoff /= base;
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	if (neg) {
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		if (cutlim > 0) {
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			cutlim -= base;
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			cutoff += 1;
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		}
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		cutlim = -cutlim;
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	}
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	for (acc = 0, any = 0;; wc = (wchar_t) *s++) {
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		i = wctoint(wc);
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		if (i == -1)
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			break;
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		if (i >= base)
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			break;
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		if (any < 0)
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			continue;
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		if (neg) {
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			if (acc < cutoff || (acc == cutoff && i > cutlim)) {
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				any = -1;
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				acc = MIN_VALUE;
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				errno = ERANGE;
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			} else {
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				any = 1;
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				acc *= base;
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				acc -= i;
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			}
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		} else {
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			if (acc > cutoff || (acc == cutoff && i > cutlim)) {
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				any = -1;
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				acc = MAX_VALUE;
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				errno = ERANGE;
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			} else {
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				any = 1;
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				acc *= base;
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				acc += i;
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			}
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		}
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	}
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	if (endptr != 0)
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		*endptr = (wchar_t *)(any ? s - 1 : nptr);
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	return (acc);
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}
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DEF_STRONG(FUNCNAME);