labs()

Calculate the absolute value of a long integer

Synopsis:

#include <stdlib.h>

long labs( long j );

Arguments:

j
The number you want the absolute value of.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The labs() function returns the absolute value of its long-integer argument j.

Returns:

The absolute value of j.

Examples:

#include <stdio.h>
#include <stdlib.h>

int main( void )
{
    long x, y;

    x = -50000;
    y = labs( x );
    printf( "labs( %d ) = %d\n", x, y );
    return EXIT_SUCCESS;
}

produces the output:

labs( -50000 ) = 50000

Classification:

ANSI, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes

Last modified: 2013-12-23

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