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/*
FUNCTION
<<abs>>---integer absolute value (magnitude)
INDEX
abs
ANSI_SYNOPSIS
#include <stdlib.h>
int abs(int <[i]>);
TRAD_SYNOPSIS
#include <stdlib.h>
int abs(<[i]>)
int <[i]>;
DESCRIPTION
<<abs>> returns
@tex
$|x|$,
@end tex
the absolute value of <[i]> (also called the magnitude
of <[i]>). That is, if <[i]> is negative, the result is the opposite
of <[i]>, but if <[i]> is nonnegative the result is <[i]>.
The similar function <<labs>> uses and returns <<long>> rather than <<int>> values.
RETURNS
The result is a nonnegative integer.
PORTABILITY
<<abs>> is ANSI.
No supporting OS subroutines are required.
*/
#include <stdlib.h>
int
_DEFUN (abs, (i), int i)
{
return (i < 0) ? -i : i;
}
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