mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 12:03:41 +00:00
f531acc8f9
- Invent openatemp() API - Invent O_UNLINK open flag - Introduce getenv_secure() API - Remove `git pull` from cosmocc - Fix utimes() when path is NULL - Fix mktemp() to never return NULL - Fix utimensat() UTIME_OMIT on XNU - Improve utimensat() code for RHEL5 - Turn `argv[0]` C:/ to /C/ on Windows - Introduce tmpnam() and tmpnam_r() APIs - Fix more const issues with internal APIs - Permit utimes() on WIN32 in O_RDONLY mode - Fix fdopendir() to check fd is a directory - Fix recent crash regression in landlock make - Fix futimens(AT_FDCWD, NULL) to return EBADF - Use workaround so `make -j` doesn't fork bomb - Rename dontdiscard to __wur (just like glibc) - Fix st_size for WIN32 symlinks containing UTF-8 - Introduce stdio ext APIs needed by GNU coreutils - Fix lstat() on WIN32 for symlinks to directories - Move some constants from normalize.inc to limits.h - Fix segv with memchr() and memcmp() overlapping page - Implement POSIX fflush() behavior for reader streams - Implement AT_SYMLINK_NOFOLLOW for utimensat() on WIN32 - Don't change read-only status of existing files on WIN32 - Correctly handle `0x[^[:xdigit:]]` case in strtol() functions
57 lines
2.8 KiB
C
57 lines
2.8 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/calls/calls.h"
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#include "libc/intrin/bits.h"
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#include "libc/intrin/popcnt.h"
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#include "libc/limits.h"
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#include "libc/mem/gc.internal.h"
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#include "libc/mem/mem.h"
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#include "libc/str/str.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/hyperion.h"
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#include "libc/testlib/testlib.h"
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void SetUpOnce(void) {
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ASSERT_SYS(0, 0, pledge("stdio", 0));
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}
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TEST(_countbits, testLow) {
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int i;
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char p[2];
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for (i = 0; i < 65536; ++i) {
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p[0] = i >> 0;
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p[1] = i >> 8;
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ASSERT_EQ(__builtin_popcount(i), _countbits(p, 2), "i=%d", i);
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}
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}
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TEST(_countbits, test) {
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int i;
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char *p = gc(memset(malloc(256), 0x55, 256));
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for (i = 0; i < 256; ++i) {
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ASSERT_EQ(i * CHAR_BIT / 2, _countbits(p, i), "i=%d", i);
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}
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}
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BENCH(countbits, bench) {
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EZBENCH_N("_countbits", 7, _countbits(kHyperion, 7));
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EZBENCH_N("_countbits", 8, _countbits(kHyperion, 8));
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EZBENCH_N("_countbits", 16, _countbits(kHyperion, 16));
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EZBENCH_N("_countbits", kHyperionSize, _countbits(kHyperion, kHyperionSize));
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}
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