diff options
Diffstat (limited to 'memelemscan.c')
| -rw-r--r-- | memelemscan.c | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/memelemscan.c b/memelemscan.c index e713d54..d17297a 100644 --- a/memelemscan.c +++ b/memelemscan.c @@ -4,32 +4,32 @@ void * -libsimple_memelemscan(const void *hay_, size_t hayn, const void *sub_, size_t subn) +libsimple_memelemscan(const void *hay_, const void *sub_, size_t width, size_t n) { - switch (subn) { + switch (width) { case 0: return (void *)hay_; case 1: - return libsimple_memscan(hay_, *(char *)sub_, hayn); + return libsimple_memscan(hay_, *(char *)sub_, n); case 2: { uint16_t *hay = (void *)hay_; uint16_t sub = *(uint16_t *)sub_; - for (; hayn-- && *hay != sub; hay++); + for (; n-- && *hay != sub; hay++); return hay; } case 4: { uint32_t *hay = (void *)hay_; uint32_t sub = *(uint32_t *)sub_; - for (; hayn-- && *hay != sub; hay++); + for (; n-- && *hay != sub; hay++); return hay; } case 8: { uint64_t *hay = (void *)hay_; uint64_t sub = *(uint64_t *)sub_; - for (; hayn-- && *hay != sub; hay++); + for (; n-- && *hay != sub; hay++); return hay; } default: @@ -37,8 +37,8 @@ libsimple_memelemscan(const void *hay_, size_t hayn, const void *sub_, size_t su char *hay = (void *)hay_; const char *sub = sub_; size_t i; - for (; hayn--; hay += subn) { - for (i = 0; i < subn; i++) + for (; n--; hay += width) { + for (i = 0; i < width; i++) if (hay[i] != sub[i]) goto next; return hay; @@ -56,39 +56,39 @@ libsimple_memelemscan(const void *hay_, size_t hayn, const void *sub_, size_t su int main(void) { - assert(!strcmpnul(libsimple_memelemscan("12345634", 8, "", 0), "12345634")); - assert(!strcmpnul(libsimple_memelemscan("12345634", 0, "", 0), "12345634")); + assert(!strcmpnul(libsimple_memelemscan("12345634", "", 0, 8), "12345634")); + assert(!strcmpnul(libsimple_memelemscan("12345634", "", 0, 0), "12345634")); - assert(!strcmpnul(libsimple_memelemscan("12345634", 8, "3", 1), "345634")); - assert(!strcmpnul(libsimple_memelemscan("12345634", 8, "x", 1), "")); - assert(!strcmpnul(libsimple_memelemscan("13456342", 8, "3", 1), "3456342")); - assert(!strcmpnul(libsimple_memelemscan("12345634", 0, "3", 1), "12345634")); + assert(!strcmpnul(libsimple_memelemscan("12345634", "3", 1, 8), "345634")); + assert(!strcmpnul(libsimple_memelemscan("12345634", "x", 1, 8), "")); + assert(!strcmpnul(libsimple_memelemscan("13456342", "3", 1, 8), "3456342")); + assert(!strcmpnul(libsimple_memelemscan("12345634", "3", 1, 0), "12345634")); - assert(!strcmpnul(libsimple_memelemscan("12345634", 4, "34", 2), "345634")); - assert(!strcmpnul(libsimple_memelemscan("12345634z", 4, "xx", 2), "z")); - assert(!strcmpnul(libsimple_memelemscan("13456342z", 4, "34", 2), "z")); - assert(!strcmpnul(libsimple_memelemscan("12345634z", 0, "34", 2), "12345634z")); + assert(!strcmpnul(libsimple_memelemscan("12345634", "34", 2, 4), "345634")); + assert(!strcmpnul(libsimple_memelemscan("12345634z", "xx", 2, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("13456342z", "34", 2, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("12345634z", "34", 2, 0), "12345634z")); - assert(!strcmpnul(libsimple_memelemscan("abcd1234abcd1234", 4, "1234", 4), "1234abcd1234")); - assert(!strcmpnul(libsimple_memelemscan("abcd1234abcd1234z", 4, "zzzz", 4), "z")); - assert(!strcmpnul(libsimple_memelemscan("cd1234abcd1234abz", 4, "1234", 4), "z")); - assert(!strcmpnul(libsimple_memelemscan("abcd1234abcd1234z", 0, "1234", 4), "abcd1234abcd1234z")); + assert(!strcmpnul(libsimple_memelemscan("abcd1234abcd1234", "1234", 4, 4), "1234abcd1234")); + assert(!strcmpnul(libsimple_memelemscan("abcd1234abcd1234z", "zzzz", 4, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("cd1234abcd1234abz", "1234", 4, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("abcd1234abcd1234z", "1234", 4, 0), "abcd1234abcd1234z")); - assert(!strcmpnul(libsimple_memelemscan("abcdefgh12345678abcdefgh12345678", 4, "12345678", 8), "12345678abcdefgh12345678")); - assert(!strcmpnul(libsimple_memelemscan("abcdefgh12345678abcdefgh12345678z", 4, "zzzzzzzz", 8), "z")); - assert(!strcmpnul(libsimple_memelemscan("efgh12345678abcdefgh12345678abcdz", 4, "12345678", 8), "z")); - assert(!strcmpnul(libsimple_memelemscan("abcdefgh12345678abcdefgh12345678z", 0, "12345678", 8), + assert(!strcmpnul(libsimple_memelemscan("abcdefgh12345678abcdefgh12345678", "12345678", 8, 4), "12345678abcdefgh12345678")); + assert(!strcmpnul(libsimple_memelemscan("abcdefgh12345678abcdefgh12345678z", "zzzzzzzz", 8, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("efgh12345678abcdefgh12345678abcdz", "12345678", 8, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("abcdefgh12345678abcdefgh12345678z", "12345678", 8, 0), "abcdefgh12345678abcdefgh12345678z")); - assert(!strcmpnul(libsimple_memelemscan("abc123abc123", 4, "123", 3), "123abc123")); - assert(!strcmpnul(libsimple_memelemscan("abc123abc123z", 4, "zzz", 3), "z")); - assert(!strcmpnul(libsimple_memelemscan("bc123abc123az", 4, "123", 3), "z")); - assert(!strcmpnul(libsimple_memelemscan("abc123abc123z", 0, "123", 3), "abc123abc123z")); + assert(!strcmpnul(libsimple_memelemscan("abc123abc123", "123", 3, 4), "123abc123")); + assert(!strcmpnul(libsimple_memelemscan("abc123abc123z", "zzz", 3, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("bc123abc123az", "123", 3, 4), "z")); + assert(!strcmpnul(libsimple_memelemscan("abc123abc123z", "123", 3, 0), "abc123abc123z")); - assert(!strcmpnul(libsimple_memelemscan("-a-aa--a", 4, "a-", 2), "a--a")); - assert(!strcmpnul(libsimple_memelemscan("--a--aa----a", 4, "a--", 3), "a----a")); - assert(!strcmpnul(libsimple_memelemscan("---a---aa------a", 4, "a---", 4), "a------a")); - assert(!strcmpnul(libsimple_memelemscan("-------a-------aa--------------a", 4, "a-------", 8), "a--------------a")); + assert(!strcmpnul(libsimple_memelemscan("-a-aa--a", "a-", 2, 4), "a--a")); + assert(!strcmpnul(libsimple_memelemscan("--a--aa----a", "a--", 3, 4), "a----a")); + assert(!strcmpnul(libsimple_memelemscan("---a---aa------a", "a---", 4, 4), "a------a")); + assert(!strcmpnul(libsimple_memelemscan("-------a-------aa--------------a", "a-------", 8, 4), "a--------------a")); return 0; } |