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