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Diffstat (limited to 'newlib/libc/stdlib/wcstoull.c')
| -rw-r--r-- | newlib/libc/stdlib/wcstoull.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/wcstoull.c b/newlib/libc/stdlib/wcstoull.c new file mode 100644 index 000000000..861009b04 --- /dev/null +++ b/newlib/libc/stdlib/wcstoull.c @@ -0,0 +1,139 @@ +/* +FUNCTION + <<wcstoull>>---wide string to unsigned long long + +INDEX + wcstoull +INDEX + _wcstoull_r + +ANSI_SYNOPSIS + #include <wchar.h> + unsigned long long wcstoull(const wchar_t *<[s]>, wchar_t **<[ptr]>, + int <[base]>); + + unsigned long long _wcstoull_r(void *<[reent]>, const wchar_t *<[s]>, + wchar_t **<[ptr]>, int <[base]>); + +TRAD_SYNOPSIS + #include <stdlib.h> + unsigned long long wcstoull(<[s]>, <[ptr]>, <[base]>) + wchar_t *<[s]>; + wchar_t **<[ptr]>; + int <[base]>; + + unsigned long long _wcstoull_r(<[reent]>, <[s]>, <[ptr]>, <[base]>) + wchar_t *<[reent]>; + wchar_t *<[s]>; + wchar_t **<[ptr]>; + int <[base]>; + +DESCRIPTION +The function <<wcstoull>> converts the wide string <<*<[s]>>> to +an <<unsigned long long>>. First, it breaks down the string into three parts: +leading whitespace, which is ignored; a subject string consisting +of the digits meaningful in the radix specified by <[base]> +(for example, <<0>> through <<7>> if the value of <[base]> is 8); +and a trailing portion consisting of one or more unparseable characters, +which always includes the terminating null character. Then, it attempts +to convert the subject string into an unsigned long long integer, and returns the +result. + +If the value of <[base]> is zero, the subject string is expected to look +like a normal C integer constant (save that no optional sign is permitted): +a possible <<0x>> indicating hexadecimal radix, and a number. +If <[base]> is between 2 and 36, the expected form of the subject is a +sequence of digits (which may include letters, depending on the +base) representing an integer in the radix specified by <[base]>. +The letters <<a>>--<<z>> (or <<A>>--<<Z>>) are used as digits valued from +10 to 35. 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 digit, the subject string is empty. + +If the subject string is acceptable, and the value of <[base]> is zero, +<<wcstoull>> 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. 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 (that is, if <<*>><[s]> does not start +with a substring in acceptable form), no conversion +is performed and the value of <[s]> is stored in <[ptr]> (if <[ptr]> is +not <<NULL>>). + +The alternate function <<_wcstoull_r>> is a reentrant version. The +extra argument <[reent]> is a pointer to a reentrancy structure. + + +RETURNS +<<wcstoull>> returns the converted value, if any. If no conversion was +made, <<0>> is returned. + +<<wcstoull>> returns <<ULONG_LONG_MAX>> if the magnitude of the converted +value is too large, and sets <<errno>> to <<ERANGE>>. + +PORTABILITY +<<wcstoull>> is ANSI. + +<<wcstoull>> requires no supporting OS subroutines. +*/ + +/* + * Copyright (c) 1990 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 <stdlib.h> +#include <reent.h> + +#ifndef _REENT_ONLY + +unsigned long long +_DEFUN (wcstoull, (s, ptr, base), + _CONST wchar_t *s _AND + wchar_t **ptr _AND + int base) +{ + return _wcstoull_r (_REENT, s, ptr, base); +} + +#endif |