rot.c File Reference

#include <stdlib.h>

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Functions
unsigned int	_rotr (unsigned int value, int shift)
unsigned long	_lrotr (unsigned long value, int shift)
unsigned int	_rotl (unsigned int value, int shift)
unsigned long	_lrotl (unsigned long value, int shift)

Function Documentation

_lrotl()

unsigned long _lrotl	(	unsigned long	value,
		int	shift
	)

Definition at line 56 of file rot.c.

{
    int max_bits = sizeof(unsigned long)<<3;
    if ( shift < 0 )
        return _lrotr(value,-shift);

    if ( shift > max_bits )
        shift = shift % max_bits;
    return (value << shift) | (value >> (max_bits-shift));
}

Referenced by _lrotr().

_lrotr()

unsigned long _lrotr	(	unsigned long	value,
		int	shift
	)

Definition at line 70 of file rot.c.

{
    int max_bits = sizeof(unsigned long)<<3;
    if ( shift < 0 )
        return _lrotl(value,-shift);

    if ( shift > max_bits )
        shift = shift % max_bits;
    return (value >> shift) | (value << (max_bits-shift));
}

Referenced by _lrotl().

_rotl()

unsigned int _rotl	(	unsigned int	value,
		int	shift
	)

Definition at line 28 of file rot.c.

{
    int max_bits = sizeof(unsigned int)<<3;
    if ( shift < 0 )
        return _rotr(value,-shift);

    if ( shift > max_bits )
        shift = shift % max_bits;
    return (value << shift) | (value >> (max_bits-shift));
}

Referenced by _rotr().

_rotr()

unsigned int _rotr	(	unsigned int	value,
		int	shift
	)

Definition at line 42 of file rot.c.

{
    int max_bits = sizeof(unsigned int)<<3;
    if ( shift < 0 )
        return _rotl(value,-shift);

    if ( shift > max_bits )
        shift = shift % max_bits;
    return (value >> shift) | (value <<  (max_bits-shift));
}

Referenced by _rotl().