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/*
* Copyright 1999, 2001 Silicon Graphics, Inc.
* Copyright 2001 Ralf Baechle
* 2001 Guido Guenther <agx@sgixcpu.org>
* 2008 Florian Lohoff <flo@rfc822.org>
*/
#include "string.h"
#include "stdlib.h"
char *strcat(char *d, char *s) {
char *a;
for(a=d;*a;a++);
for(;*s;*a++=*s++);
*a=0x0;
return d;
}
size_t strlen(const char *s)
{
size_t len = 0;
while (*(s++) != '\0')
len += 1;
return len;
}
int strncmp(const char *s1, const char *s2, size_t n)
{
while (n-- > 0) {
if (*s1 < *s2)
return -1;
else if (*s1 > *s2)
return 1;
else if (*s1 == '\0')
return 0;
s1 += 1;
s2 += 1;
}
return 0;
}
/* from lib/string.c in the kernel sources */
int strcmp(const char * cs,const char * ct)
{
register signed char __res;
while (1) {
if ((__res = *cs - *ct++) != 0 || !*cs++)
break;
}
return __res;
}
char *strchr(const char *s, int c)
{
while ((*s != (char) c) && (*s != '\0'))
s += 1;
return (char *) ((*s == '\0') ? NULL : s);
}
char *strcpy(char *s1, const char *s2)
{
char *s = s1;
do {
*(s1++) = *(s2);
} while(*s2++ != 0x0);
return s;
}
char *strncpy(char *s1, const char *s2, size_t n)
{
char *s = s1;
while (n-- > 0) {
if ((*(s1++) = *(s2++)) == '\0')
break;
}
return s;
}
char *strdup(const char *s1)
{
char *str = malloc(strlen(s1) + 1);
if (str != NULL)
strcpy(str, s1);
return str;
}
int memcmp(const void * cs,const void * ct,size_t count)
{
const unsigned char *su1, *su2;
signed char res = 0;
for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
if ((res = *su1 - *su2) != 0)
break;
return res;
}
void *memcpy(void *s1, const void *s2, size_t n)
{
char *c1 = (char *) s1;
const char *c2 = (const char *) s2;
while (n-- > 0)
*(c1++) = *(c2++);
return s1;
}
void *memmove(void *s1, const void *s2, size_t n)
{
char *c1 = (char *) s1;
const char *c2 = (const char *) s2;
if (s1 < s2)
return memcpy(s1, s2, n);
c1+=n;
c2+=n;
while (n-- > 0)
*(--c1) = *(--c2);
return s1;
}
void *memset(void *s, int c, size_t n)
{
char *mem = (char *) s;
while (n-- > 0)
*(mem++) = (char) c;
return s;
}
void __bzero(char *p, int len)
{
memset(p, 0, len);
}
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