Subversion Repositories freemyipod

//

//

//    Copyright 2010 TheSeven

//

//

//    This file is part of emBIOS.

//

//    emBIOS is free software: you can redistribute it and/or

//    modify it under the terms of the GNU General Public License as

//    published by the Free Software Foundation, either version 2 of the

//    License, or (at your option) any later version.

//

//    emBIOS is distributed in the hope that it will be useful,

//    but WITHOUT ANY WARRANTY; without even the implied warranty of

//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

//    See the GNU General Public License for more details.

//

//    You should have received a copy of the GNU General Public License along

//    with emBIOS.  If not, see <http://www.gnu.org/licenses/>.

//

//

#include "global.h"

#include "util.h"

void* memcpy(void* destination, const void* source, size_t num)

{

    unsigned char* dest = (unsigned char*)destination;

    unsigned char* src = (unsigned char*)source;

    while (num--) *dest++ = *src++;

    return destination;

}

void* memset(void* ptr, int value, size_t num)

{

    unsigned char* dest = (unsigned char*)ptr;

    while (num--) *dest++ = (unsigned char)value;

    return ptr;

}

int memcmp(const void* ptr1, const void* ptr2, size_t num)

{

    unsigned char* src1 = (unsigned char*)ptr1;

    unsigned char* src2 = (unsigned char*)ptr2;

    int diff;

    while (num--)

      if (diff = *src1++ - *src2++)

        return diff;

    return 0;

}

void* memchr(const void* ptr, int value, size_t num)

{

    unsigned char val = (unsigned char)value;

    while (num-- > 0)

    {

        if (*((unsigned char*)ptr) == val)

            return (void*)ptr;

        ptr++;

    }

    return NULL;

}