You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.2 KiB
73 lines
1.2 KiB
#include "no_crt.h"
|
|
|
|
int atexit(void (*func) (void))
|
|
{
|
|
func();
|
|
return NULL;
|
|
}
|
|
|
|
int memcmp(const void* buf1, const void* buf2, size_t count)
|
|
{
|
|
if (!count)
|
|
return(0);
|
|
|
|
while (--count && *(char*)buf1 == *(char*)buf2)
|
|
{
|
|
buf1 = (char*)buf1 + 1;
|
|
|
|
buf2 = (char*)buf2 + 1;
|
|
|
|
}
|
|
return(*((unsigned char*)buf1) - *((unsigned char*)buf2));
|
|
|
|
}
|
|
|
|
void* memcpy(void* memTo, const void* memFrom, size_t size)
|
|
{
|
|
if (!memTo || !memFrom)
|
|
return nullptr;
|
|
const char* temFrom = (const char*)memFrom;
|
|
char* temTo = (char*)memTo;
|
|
while (size-- > 0)
|
|
*temTo++ = *temFrom++;
|
|
return memTo;
|
|
}
|
|
|
|
void* memmove(void* dst, const void* src, size_t count)
|
|
{
|
|
if (!dst || !src)
|
|
return nullptr;
|
|
void* ret = dst;
|
|
if (dst <= src || (char*)dst >= ((char*)src + count))
|
|
{
|
|
while (count--)
|
|
{
|
|
*(char*)dst = *(char*)src;
|
|
dst = (char*)dst + 1;
|
|
src = (char*)src + 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
dst = (char*)dst + count - 1;
|
|
src = (char*)src + count - 1;
|
|
while (count--)
|
|
{
|
|
*(char*)dst = *(char*)src;
|
|
dst = (char*)dst - 1;
|
|
src = (char*)src - 1;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void* memset(void* dest, int c, size_t count)
|
|
{
|
|
char* bytes = (char*)dest;
|
|
while (count--)
|
|
{
|
|
*bytes++ = (char)c;
|
|
}
|
|
return dest;
|
|
} |