Syntax

#include <stdlib.h>
long int labs(long int n);

labs produces the absolute value of its long integer argument n. The result may be undefined when the argument is equal to LONG_MIN, the smallest available long integer (-2 147 483 647). The value LONG_MIN is defined in the <limits.h> include file.

labs returns the absolute value of n. There is no error return value.

This example computes y as the absolute value of the long integer -41567.

#include <stdlib.h>

int main(void)
{
   long x,y;

   x = -41567L;
   y = labs(x);
   printf("The absolute value of %ld is %ld\n", x, y);
   return 0;

   /****************************************************************************
      The output should be:

      The absolute value of -41567 is 41567
   ****************************************************************************/
}

• abs
  
• fabs

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