BarinkOS/source/CoreLib/Memory.cpp

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//
// Created by nigel on 19/02/23.
//
#include "Memory.h"
void* memset (void* ptr, int value, size_t num)
{
for( int i = 0; i < num; i++ )
{
unsigned char* data = (unsigned char*)ptr+ i;
*data = (unsigned char)value;
}
return ptr;
}
int memcmp( const void* ptr1, const void* ptr2, size_t num)
{
const unsigned char * cs = (const unsigned char*) ptr1;
const unsigned char * ct = (const unsigned char*) ptr2;
for (int i = 0 ; i < num ; i++, cs++, ct++ ){
if( *cs < *ct){
return -1;
} else if( *cs > *ct){
return 1;
}
}
return 0;
}
size_t strlen(const char* str) {
size_t len = 0;
while(str[len]){
len++;
}
return len;
}
int strncmp ( const char* str1, const char* str2, size_t num ){
for( int i = 0; i < num ; i++){
if( str1[i] < str2[i]){
return -1;
}
if( str1[i] > str2[i] ){
return 1;
}
}
return 0;
}