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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [stdlib/] [strtoll.c] - Rev 158
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/* FUNCTION <<strtoll>>---string to long long INDEX strtoll INDEX _strtoll_r ANSI_SYNOPSIS #include <stdlib.h> long long strtoll(const char *<[s]>, char **<[ptr]>,int <[base]>); long long _strtoll_r(void *<[reent]>, const char *<[s]>, char **<[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 *s _AND char **ptr _AND int base) { return _strtoll_r (_REENT, s, ptr, base); } #endif