* Copyright 2025, Haiku, Inc. All rights reserved.
* Copyright 2008, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT license.
*/
#include <stdint.h>
#include <string.h>
#define LACKS_ZERO_BYTE(value) \
(((value - 0x01010101) & ~value & 0x80808080) == 0)
int
strcmp(char const *a, char const *b)
{
if ((((addr_t)a) & 3) == 0 && (((addr_t)b) & 3) == 0) {
uint32_t *a32 = (uint32_t *)a;
uint32_t *b32 = (uint32_t *)b;
while (*a32 == *b32 && LACKS_ZERO_BYTE((*a32))) {
a32++;
b32++;
}
a = (const char *)a32;
b = (const char *)b32;
}
while (*a == *b && *a != 0) {
a++;
b++;
}
return (unsigned char)*a - (unsigned char)*b;
}
