newlib/libc/stdlib/llabs.c

   1 /*
   2 FUNCTION
   3 <<llabs>>---compute the absolute value of an long long integer.
   4
   5 INDEX
   6         llabs
   7
   8 SYNOPSIS
   9         #include <stdlib.h>
  10         long long llabs(long long <[j]>);
  11
  12 DESCRIPTION
  13 The <<llabs>> function computes the absolute value of the long long integer
  14 argument <[j]> (also called the magnitude of <[j]>).
  15
  16 The similar function <<labs>> uses and returns <<long>> rather than
  17 <<long long>> values.
  18
  19 RETURNS
  20 A nonnegative long long integer.
  21
  22 PORTABILITY
  23 <<llabs>> is ISO 9899 (C99) compatable.
  24
  25 No supporting OS subroutines are required.
  26 */
  27
  28 /*-
  29  * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
  30  * All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  */
  53
  54 #include <stdlib.h>
  55
  56 long long
  57 llabs (long long j)
  58 {
  59         return (j < 0 ? -j : j);
  60 }