blob: 698aba6289ab98cb4e6d22bf9d01c6fd0dca5701 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
#include <stddef.h> // for NULL
#include <string.h> // for strcmp
int strcmp(const char *s1, const char *s2)
{
const unsigned char *p1 = (const unsigned char *)s1;
const unsigned char *p2 = (const unsigned char *)s2;
if (p1 == NULL && p2 == NULL)
return 0;
if (p1 == NULL)
return -1;
if (p2 == NULL)
return 1;
while (*p1 == *p2 && *p1 != '\0') {
p1++;
p2++;
}
return *p1 - *p2;
}
|
