mirror of
https://github.com/jart/cosmopolitan.git
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b41f91c658
The cosmopolitan command interpreter now has 13 builtin commands, variable support, support for ; / && / || syntax, asynchronous support, and plenty of unit tests with bug fixes. This change fixes a bug in posix_spawn() with null envp arg. strace logging now uses atomic writes for scatter functions. Breaking change renaming GetCpuCount() to _getcpucount(). TurfWar is now updated to use the new token bucket algorithm. WIN32 affinity masks now inherit across fork() and execve().
59 lines
3.1 KiB
C
59 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/errno.h"
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#include "libc/fmt/conv.h"
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#include "libc/fmt/strtol.internal.h"
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#include "libc/limits.h"
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#include "libc/str/str.h"
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#include "libc/str/tab.internal.h"
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/**
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* Decodes unsigned integer from wide string.
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*
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* @param s is a non-null nul-terminated string
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* @param endptr if non-null will always receive a pointer to the char
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* following the last one this function processed, which is usually
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* the NUL byte, or in the case of invalid strings, would point to
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* the first invalid character
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* @param base can be anywhere between [2,36] or 0 to auto-detect based
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* on the the prefixes 0 (octal), 0x (hexadecimal), 0b (binary), or
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* decimal (base 10) by default
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* @return decoded integer mod 2⁶⁴ negated if leading `-`
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*/
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unsigned long wcstoul(const wchar_t *s, wchar_t **endptr, int base) {
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char t = 0;
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int d, c = *s;
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unsigned long x = 0;
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CONSUME_SPACES(s, c);
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GET_SIGN(s, c, d);
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GET_RADIX(s, c, base);
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if ((c = kBase36[c & 255]) && --c < base) {
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t |= 1;
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do {
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if (__builtin_mul_overflow(x, base, &x) ||
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__builtin_add_overflow(x, c, &x)) {
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if (endptr) *endptr = s + 1;
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errno = ERANGE;
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return ULONG_MAX;
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}
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} while ((c = kBase36[*++s & 255]) && --c < base);
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}
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if (t && endptr) *endptr = s;
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return d > 0 ? x : -x;
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}
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