/*

Copyright (c) 2010, Shawn McGregor All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    * Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

bitops.c

*/

/******************************************************************
 Function:  char bitchk (char var, char bitpos)
 Input:		var     : variable to perform bit check on
			bitpos  : bit position to check
 Output:
 Overview: 	Checks the bit of "var" at position of "bitpos"
*******************************************************************/

char bitchk (char var, char bitpos)
{
	return (var &(1 << bitpos));
}

/******************************************************************
 Function:  bitset (char var, char bitpos)
 Input:		var     : variable to perform bit change on
			bitpos  : bit position to set
 Output:
 Overview: 	Sets the bit of "var" at position of "bitpos"
*******************************************************************/

char bitset (char var, char bitpos)
{
	return  (var |=1 << bitpos);
}

/******************************************************************
 Function:  bitclr (char var, char bitpos)
 Input:		var     : variable to perform bit clear on
			bitpos  : bit position to clear
 Output:
 Overview: 	Clears the bit of "var" at position of "bitpos"
*******************************************************************/

char bitclr (char var, char bitpos)
{
	return (var&=~(1<<bitpos));
}

/******************************************************************
 Function:  bitshr (char var, char bitpos)
 Input:		var     : variable to perform right shifts on
			bitpos  : bit positions to shift to the right
 Output:
 Overview: 	Shift the bits of "var" to the right the value of "bitpos"
*******************************************************************/

char bitshr (char var, char bitpos)
{
	return ((var >> bitpos));
}

/******************************************************************
 Function:  bitshl (char var, char bitpos)
 Input:		var     : variable to perform right shifts on
			bitpos  : bit positions to shift to the right
 Output:
 Overview: 	Shift the bits of "var" to the right the value of "bitpos"
*******************************************************************/

char bitshl (char var, char bitpos)
{
	return ((var << bitpos));
}