Subversion Repositories openrisc_2011-10-31

/*

FUNCTION

   <<wcstoll>>---wide string to long long

INDEX

        wcstoll

INDEX

        _wcstoll_r

ANSI_SYNOPSIS

        #include <wchar.h>

        long long wcstoll(const wchar_t *<[s]>, wchar_t **<[ptr]>,int <[base]>);

        long long _wcstoll_r(void *<[reent]>,

                       const wchar_t *<[s]>, wchar_t **<[ptr]>,int <[base]>);

TRAD_SYNOPSIS

        #include <stdlib.h>

        long long wcstoll (<[s]>, <[ptr]>, <[base]>)

        const wchar_t *<[s]>;

        wchar_t **<[ptr]>;

        int <[base]>;

        long long _wcstoll_r (<[reent]>, <[s]>, <[ptr]>, <[base]>)

        wchar_t *<[reent]>;

        const wchar_t *<[s]>;

        wchar_t **<[ptr]>;

        int <[base]>;

DESCRIPTION

The function <<wcstoll>> converts the wide string <<*<[s]>>> to

a <<long long>>. First, it breaks down the string into three parts:

leading whitespace, which is ignored; a subject string consisting

of characters resembling an integer in the radix specified by <[base]>;

and a trailing portion consisting of zero or more unparseable characters,

and always including the terminating null character. Then, it attempts

to convert the subject string into a <<long long>> and returns the

result.

If the value of <[base]> is 0, the subject string is expected to look

like a normal C integer constant: an optional sign, a possible `<<0x>>'

indicating a hexadecimal base, and a number. If <[base]> is between

2 and 36, the expected form of the subject is a sequence of letters

and digits representing an integer in the radix specified by <[base]>,

with an optional plus or minus sign. The letters <<a>>--<<z>> (or,

equivalently, <<A>>--<<Z>>) are used to signify values from 10 to 35;

only letters whose ascribed values are less than <[base]> are

permitted. If <[base]> is 16, a leading <<0x>> is permitted.

The subject sequence is the longest initial sequence of the input

string that has the expected form, starting with the first

non-whitespace character.  If the string is empty or consists entirely

of whitespace, or if the first non-whitespace character is not a

permissible letter or digit, the subject string is empty.

If the subject string is acceptable, and the value of <[base]> is zero,

<<wcstoll>> attempts to determine the radix from the input string. A

string with a leading <<0x>> is treated as a hexadecimal value; a string with

a leading 0 and no <<x>> is treated as octal; all other strings are

treated as decimal. If <[base]> is between 2 and 36, it is used as the

conversion radix, as described above. If the subject string begins with

a minus sign, the value is negated. Finally, a pointer to the first

character past the converted subject string is stored in <[ptr]>, if

<[ptr]> is not <<NULL>>.

If the subject string is empty (or not in acceptable form), no conversion

is performed and the value of <[s]> is stored in <[ptr]> (if <[ptr]> is

not <<NULL>>).

The alternate function <<_wcstoll_r>> is a reentrant version.  The

extra argument <[reent]> is a pointer to a reentrancy structure.

RETURNS

<<wcstoll>> returns the converted value, if any. If no conversion was

made, 0 is returned.

<<wcstoll>> returns <<LONG_LONG_MAX>> or <<LONG_LONG_MIN>> if the magnitude of

the converted value is too large, and sets <<errno>> to <<ERANGE>>.

PORTABILITY

<<wcstoll>> is ANSI.

No supporting OS subroutines are required.

*/

/*-

 * Copyright (c) 1990 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#include <_ansi.h>

#include <limits.h>

#include <wctype.h>

#include <errno.h>

#include <wchar.h>

#include <reent.h>

#ifndef _REENT_ONLY

long long

_DEFUN (wcstoll, (s, ptr, base),

        _CONST wchar_t *s _AND

        wchar_t **ptr _AND

        int base)

{

        return _wcstoll_r (_REENT, s, ptr, base);

}

#endif