mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
7c83f4abc8
- wcsstr() is now linearly complex - strstr16() is now linearly complex - strstr() is now vectorized on aarch64 (10x) - strstr() now uses KMP on pathological cases - memmem() is now vectorized on aarch64 (10x) - memmem() now uses KMP on pathological cases - Disable shared_ptr::owner_before until fixed - Make iswlower(), iswupper() consistent with glibc - Remove figure space from iswspace() implementation - Include line and paragraph separator in iswcntrl() - Use Musl wcwidth(), iswalpha(), iswpunct(), towlower(), towupper()
38 lines
2.4 KiB
C
38 lines
2.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/str/str.h"
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#include "libc/wctype.h"
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/**
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* Compares NUL-terminated UCS-2 strings case-insensitively w/ limit.
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*
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* @param a is first non-null NUL-terminated char16 string pointer
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* @param b is second non-null NUL-terminated char16 string pointer
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* @return is <0, 0, or >0 based on uint8_t comparison
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* @asyncsignalsafe
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*/
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int strncasecmp16(const char16_t *a, const char16_t *b, size_t n) {
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int x, y;
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size_t i = 0;
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if (!n-- || a == b)
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return 0;
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while ((x = towlower(a[i])) == (y = towlower(b[i])) && b[i] && i < n)
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++i;
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return x - y;
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}
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