string.c

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//-----------------------------------------------------------------------------
// string.c
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
// Memory Buffer Copy Routine
//-----------------------------------------------------------------------------
/*void memcpy (char * dest, char * sour, char len)
{
	char i;
	for ( i = 0; i < len; i++ )	dest[i] = sour[i];
}
//-----------------------------------------------------------------------------
// Memory Buffer Compare Routine
//-----------------------------------------------------------------------------
char memcmp (char * buf1, char * buf2, char len)
{
	char i;
	for ( i = 0; i < len; i++ )	if ( buf1[i] != buf2[i] ) return 1;
	return 0;
}
//-----------------------------------------------------------------------------
// Memory Buffer Set Routine
//-----------------------------------------------------------------------------
void memset (char * buf, char c, char len)
{
	char i;
	for ( i = 0; i < len; i++ )	buf[i] = c;
}
*/
//-----------------------------------------------------------------------------
// Buffer Make XOR Routine
//-----------------------------------------------------------------------------
char Buffer_XOR ( char * buf, char n )
{
	char xor = 0;
	while ( n-- ) xor ^= *buf++;
	return xor;
}
//-----------------------------------------------------------------------------
// Buffer Make Sum Routine
//-----------------------------------------------------------------------------
char Buffer_Sum ( char * buf, char n )
{
	char sum = 0;
	while ( n-- ) sum += * buf++;
	return sum;
}
//-----------------------------------------------------------------------------
// Memory Buffer all Zero Routine
//-----------------------------------------------------------------------------
bit Buffer_is_Zero ( char * buf, char n )
{
	while ( n-- ) if ( *buf++ != 0 ) return 0;
	return 1;
}