function

labs

long int labs (long int n);

Absolute value

Returns the absolute value of parameter n ( /n/ ).

This is the long int version of abs.

Parameters

n: Integral value.

Return Value

The absolute value of n.

Example

/* labs example */
#include <stdio.h>      /* printf */
#include <stdlib.h>     /* labs */

int main ()
{
  long int n,m;
  n=labs(65537L);
  m=labs(-100000L);
  printf ("n=%ld\n",n);
  printf ("m=%ld\n",m);
  return 0;
}

Output:


n=65537
m=100000

Data races

Concurrently calling this function is safe, causing no data races.

Exceptions (C++)

No-throw guarantee: this function throws no exceptions.

If the result cannot be represented as a long int (such as labs(LONG_MIN) in an implementation with two's complement signed values), it causes undefined behavior.