labs() — Calculate long absolute value

Standards

Standards / Extensions	C or C++	Dependencies
ISO C XPG4 XPG4.2 C99 Single UNIX Specification, Version 3	both

Format

#include <stdlib.h>

long int labs(long int n);

General description

Calculates the absolute value of its long integer argument n. The result is undefined when the argument is equal to LONG_MIN, the smallest available long integer (-2 147 483 648). The value LONG_MIN is defined in the limits.h header file.

Returned value

Returns the absolute value of the long integer argument n.

Example

CELEBL01

⁄* CELEBL01                                      

   This example computes y as the absolute value of                             
   the long integer -41567.                                                     
                                                                                
 *⁄                                                                             
#include <stdlib.h>                                                             
#include <stdio.h>                                                              
                                                                                
int main(void)                                                                  
{                                                                               
   long x, y;                                                                   
                                                                                
   x = -41567L;                                                                 
   y = labs(x);                                                                 
                                                                                
   printf("The absolute value of %ld is %ld\n", x, y);                          
}

Output

The absolute value of -41567 is 41567