139 lines
5.3 KiB
C
139 lines
5.3 KiB
C
/*
|
|
FUNCTION
|
|
<<strtoll>>---string to long long
|
|
|
|
INDEX
|
|
strtoll
|
|
INDEX
|
|
_strtoll_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdlib.h>
|
|
long long strtoll(const char *restrict <[s]>, char **restrict <[ptr]>,int <[base]>);
|
|
|
|
long long _strtoll_r(void *<[reent]>,
|
|
const char *restrict <[s]>, char **restrict <[ptr]>,int <[base]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdlib.h>
|
|
long long strtoll (<[s]>, <[ptr]>, <[base]>)
|
|
const char *<[s]>;
|
|
char **<[ptr]>;
|
|
int <[base]>;
|
|
|
|
long long _strtoll_r (<[reent]>, <[s]>, <[ptr]>, <[base]>)
|
|
char *<[reent]>;
|
|
const char *<[s]>;
|
|
char **<[ptr]>;
|
|
int <[base]>;
|
|
|
|
DESCRIPTION
|
|
The function <<strtoll>> converts the 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,
|
|
<<strtoll>> 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 <<_strtoll_r>> is a reentrant version. The
|
|
extra argument <[reent]> is a pointer to a reentrancy structure.
|
|
|
|
RETURNS
|
|
<<strtoll>> returns the converted value, if any. If no conversion was
|
|
made, 0 is returned.
|
|
|
|
<<strtoll>> returns <<LONG_LONG_MAX>> or <<LONG_LONG_MIN>> if the magnitude of
|
|
the converted value is too large, and sets <<errno>> to <<ERANGE>>.
|
|
|
|
PORTABILITY
|
|
<<strtoll>> 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 <ctype.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <reent.h>
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
long long
|
|
_DEFUN (strtoll, (s, ptr, base),
|
|
_CONST char *__restrict s _AND
|
|
char **__restrict ptr _AND
|
|
int base)
|
|
{
|
|
return _strtoll_r (_REENT, s, ptr, base);
|
|
}
|
|
|
|
#endif
|