mirror of https://github.com/GNOME/gimp.git
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* gimpmath.h
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_MATH_H__
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#define __GIMP_MATH_H__
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#include <math.h>
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#ifdef HAVE_IEEEFP_H
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#include <ieeefp.h>
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#endif
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#ifdef G_OS_WIN32
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#include <float.h>
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#endif
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#include <libgimpmath/gimpmathtypes.h>
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#include <libgimpmath/gimpmatrix.h>
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#include <libgimpmath/gimpmd5.h>
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#include <libgimpmath/gimpvector.h>
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G_BEGIN_DECLS
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/* Some portability enhancing stuff. For use both by the gimp app
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* as well as plug-ins and modules.
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*
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* Include this instead of just <math.h>.
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*/
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/* Use RINT() instead of rint() */
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#ifdef HAVE_RINT
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#define RINT(x) rint(x)
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#else
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#define RINT(x) floor ((x) + 0.5)
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#endif
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#define ROUND(x) ((int) ((x) + 0.5))
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/* Square */
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#define SQR(x) ((x) * (x))
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/* Limit a (0->511) int to 255 */
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#define MAX255(a) ((a) | (((a) & 256) - (((a) & 256) >> 8)))
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/* Clamp a >>int32<<-range int between 0 and 255 inclusive */
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#define CLAMP0255(a) CLAMP(a,0,255)
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#define gimp_deg_to_rad(angle) ((angle) * (2.0 * G_PI) / 360.0)
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#define gimp_rad_to_deg(angle) ((angle) * 360.0 / (2.0 * G_PI))
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G_END_DECLS
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#endif /* __GIMP_MATH_H__ */
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