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LibC: Add strcmp and strncmp

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Bananymous
2023-02-23 15:57:33 +02:00
parent 390a747768
commit 5cd97e44e2
4 changed files with 27 additions and 0 deletions
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11
libc/string/strcmp.cpp Normal file
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#include <string.h>
int strcmp(const char* s1, const char* s2)
{
const unsigned char* u1 = (unsigned char*)s1;
const unsigned char* u2 = (unsigned char*)s2;
for (; *u1 && *u2; u1++, u2++)
if (*u1 != *u2)
break;
return *u1 - *u2;
}

11
libc/string/strncmp.cpp Normal file
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#include <string.h>
int strncmp(const char* s1, const char* s2, size_t n)
{
const unsigned char* u1 = (unsigned char*)s1;
const unsigned char* u2 = (unsigned char*)s2;
for (; --n && *u1 && *u2; u1++, u2++)
if (*u1 != *u2)
break;
return *u1 - *u2;
}