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_lrotl, _lrotr

Header File 

stdlib.h  

Category 

Math Routines 

Prototype 

unsigned long _lrotl(unsigned long val, int count); 

unsigned long _lrotr(unsigned long val, int count); 

Description 

Rotates an unsigned long integer value to the left or right. 

_Irotlrotates the given val to the left count bits. _lrotr rotates the given val to the right count bits. 

Return Value 

The functions return the rotated integer:

  • _lrotl returns the value of val left-rotated count bits.
  • _lrotr returns the value of val right-rotated count bits.
Example

#include <stdlib.h>
#include <stdio.h>
/* function prototypes */
int lrotl_example(void);
int lrotr_example(void);
/* lrotl example */
int lrotl_example(void)
{
   unsigned long result;
   unsigned long value = 100;
   result = _lrotl(value,1);
   printf("The value %lu rotated left one bit is: %lu\n", value, result);
   return 0;
}
/* lrotr example */
int lrotr_example(void)
{
   unsigned long result;
   unsigned long value = 100;
   result = _lrotr(value,1);
   printf("The value %lu rotated right one bit is: %lu\n", value, result);
   return 0;
}
int main(void)
{
   lrotl_example();
   lrotr_example();
   return 0;
}

Portability

POSIX 
Win32 
ANSI C 
ANSI C++ 
 
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