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Diffstat (limited to 'lib/libutils/isoc/newlib/abs.c')
-rw-r--r-- | lib/libutils/isoc/newlib/abs.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/lib/libutils/isoc/newlib/abs.c b/lib/libutils/isoc/newlib/abs.c new file mode 100644 index 0000000..b073485 --- /dev/null +++ b/lib/libutils/isoc/newlib/abs.c @@ -0,0 +1,75 @@ +/* + * Copyright (c) 1994-2009 Red Hat, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* +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 "_ansi.h" +#include <stdlib.h> + +int +_DEFUN (abs, (i), int i) +{ + return (i < 0) ? -i : i; +} |