126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/* -*- mode:C; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Tomas Frydrych <tf@openedhand.com>
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*
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* Copyright (C) 2007 OpenedHand
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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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/**
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* SECTION:clutter-real
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* @short_description: An abstract numeric type encapsulating either float
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* or fixed point number, depending whether clutter was configured using
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* FPU or not.
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*
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* Since: 0.4
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*/
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#ifndef _HAVE_CLUTTER_REAL_H
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#define _HAVE_CLUTTER_REAL_H
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#include "clutter-fixed.h"
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#if 1
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#if CLUTTER_NO_FPU
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#define CLUTTER_REAL_IS_FIXED() 1
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#define CLUTTER_REAL_IS_FLOAT() 0
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typedef ClutterFixed ClutterReal;
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#define CLUTTER_REAL_MUL(x,y) CFX_MUL((x),(y))
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#define CLUTTER_REAL_DIV(x,y) CFX_DIV((x),(y))
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#define CLUTTER_REAL_ADD_INT(x,i) ((x) + CLUTTER_INT_TO_FIXED(i))
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#define CLUTTER_REAL_SUB_INT(x,i) ((x) - CLUTTER_INT_TO_FIXED(i))
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#define CLUTTER_REAL_TO_INT(x) CFX_INT((x) + (CFX_ONE >> 1))
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#define CLUTTER_REAL_FROM_INT(i) CLUTTER_INT_TO_FIXED(i)
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#define CLUTTER_REAL_TO_FLOAT(x) CLUTTER_FIXED_TO_FLOAT(x)
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#define CLUTTER_REAL_FROM_FLOAT(f) CLUTTER_FLOAT_TO_FIXED(f)
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#define CLUTTER_REAL_TO_FIXED(x) (x)
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#define CLUTTER_REAL_FROM_FIXED(x) (x)
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#define CLUTTER_REAL_ZERO 0
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#else
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#define CLUTTER_REAL_IS_FIXED() 0
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#define CLUTTER_REAL_IS_FLOAT() 1
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typedef float ClutterReal;
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#define CLUTTER_REAL_MUL(x,y) ((x)*(y))
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#define CLUTTER_REAL_DIV(x,y) ((x)/(y))
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#define CLUTTER_REAL_ADD_INT(x,i) (x+i)
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#define CLUTTER_REAL_SUB_INT(x,i) (x-i)
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#define CLUTTER_REAL_TO_INT(x) CLUTTER_FLOAT_TO_INT(x+0.5)
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#define CLUTTER_REAL_FROM_INT(i) ((float)i)
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#define CLUTTER_REAL_TO_FLOAT(x) (x)
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#define CLUTTER_REAL_FROM_FLOAT(f) (f)
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#define CLUTTER_REAL_TO_FIXED(x) CLLUTER_FLOAT_TO_FIXED(x)
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#define CLUTTER_REAL_FROM_FIXED(x) CLUTTER_FIXED_TO_FLOAT(x)
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#define CLUTTER_REAL_ZERO 0.0
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#endif
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#else
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/*
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* This is an int defintion for reference / debugging purposes only
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*
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* FIXME : remove this when no longer needed.
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*/
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typedef gint ClutterReal;
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#define CLUTTER_REAL_MUL(x,y) ((x)*(y))
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#define CLUTTER_REAL_DIV(x,y) ((x)/(y))
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#define CLUTTER_REAL_ADD_INT(x,i) (x + i)
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#define CLUTTER_REAL_SUB_INT(x,i) (x - i)
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#define CLUTTER_REAL_TO_INT(x) (x)
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#define CLUTTER_REAL_FROM_INT(i) (i)
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#define CLUTTER_REAL_TO_FLOAT(x) ((float)(x))
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#define CLUTTER_REAL_FROM_FLOAT(f) ((gint)(f))
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#define CLUTTER_REAL_TO_FIXED(x) CLUTTER_INT_TO_FIXED(x)
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#define CLUTTER_REAL_FROM_FIXED(x) CFX_INT(x)
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#define CLUTTER_REAL_ZERO 0
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#endif
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#define CLUTTER_REAL_EZ(x) (CLUTTER_REAL_TO_INT(x) == 0)
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#define CLUTTER_REAL_NZ(x) (CLUTTER_REAL_TO_INT(x) != 0)
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#define CLUTTER_REAL_EQ(x,y) (CLUTTER_REAL_TO_INT(x) == CLUTTER_REAL_TO_INT(y))
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#define CLUTTER_REAL_NE(x,y) (CLUTTER_REAL_TO_INT(x) != CLUTTER_REAL_TO_INT(y))
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#define CLUTTER_REAL_LT(x,y) (CLUTTER_REAL_TO_INT(x) < CLUTTER_REAL_TO_INT(y))
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#define CLUTTER_REAL_GT(x,y) (CLUTTER_REAL_TO_INT(x) > CLUTTER_REAL_TO_INT(y))
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#define CLUTTER_REAL_LE(x,y) (CLUTTER_REAL_TO_INT(x) <= CLUTTER_REAL_TO_INT(y))
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#define CLUTTER_REAL_GE(x,y) (CLUTTER_REAL_TO_INT(x) >= CLUTTER_REAL_TO_INT(y))
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#endif /* ifndef _HAVE_CLUTTER_REAL_H */
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