Subversion Repositories freemyipod

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;

}