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lib: Support gcc-4.6.4: Add labs. 

* lib/math/labs.c: New file.
* include/math.h (labs): Declare.
* build-aux/configure-lib.sh (libc_gnu_SOURCES): Add it.
This commit is contained in:
Jan Nieuwenhuizen 2019-02-08 13:59:02 +01:00 committed by Jan (janneke) Nieuwenhuizen
parent 23abd8e2b7
commit 948590425b
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GPG Key ID: F3C1A0D9C1D65273
3 changed files with 31 additions and 0 deletions
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1
build-aux/configure-lib.sh
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@ -323,6 +323,7 @@ lib/dirent/readdir.c
lib/math/ceil.c
lib/math/fabs.c
lib/math/floor.c
lib/math/labs.c
lib/mes/fdgets.c
lib/posix/alarm.c
lib/posix/execl.c

1
include/math.h
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@ -31,6 +31,7 @@ double cos (double x);
double exp (double x);
double fabs (double number);
double floor (double x);
long int labs (long int number);
double ldexp (double value, int exponent);
double log (double x);
double modf (double value, double *integer_part);

29
lib/math/labs.c Normal file
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@ -0,0 +1,29 @@
/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
long int
labs (long int number)
{
if (number < 0)
return -number;
return number;
}