mirror of
https://github.com/jart/cosmopolitan.git
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daf4454a06
- Work towards improving non-optimized build support - Introduce MODE=zero which is -O0 without ASAN/UBSAN - Use system GCC when ~/.cosmo.mk has USE_SYSTEM_TOOLCHAIN=1 - Have package.com check .privileged code doesn't call non-privileged
55 lines
2.5 KiB
C
55 lines
2.5 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 2021 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/fmt/itoa.h"
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/**
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* Converts unsigned 32-bit integer to string.
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*
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* @param p needs at least 12 bytes
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* @return pointer to nul byte
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*/
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privileged dontinline char *FormatUint32(char p[hasatleast 12], uint32_t x) {
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char t;
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size_t i, a, b;
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i = 0;
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do {
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p[i++] = x % 10 + '0';
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x = x / 10;
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} while (x > 0);
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p[i] = '\0';
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if (i) {
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for (a = 0, b = i - 1; a < b; ++a, --b) {
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t = p[a];
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p[a] = p[b];
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p[b] = t;
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}
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}
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return p + i;
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}
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/**
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* Converts signed 32-bit integer to string.
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*
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* @param p needs at least 12 bytes
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* @return pointer to nul byte
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*/
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privileged char *FormatInt32(char p[hasatleast 12], int32_t x) {
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if (x < 0) *p++ = '-', x = -(uint32_t)x;
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return FormatUint32(p, x);
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}
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