| /* |
| 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; |
| } |
