add missing clutter-real.h

clutter/clutter-real.h

@@ -0,0 +1,125 @@
+/* -*- mode:C; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Clutter.
+ *
+ * An OpenGL based 'interactive canvas' library.
+ *
+ * Authored By Tomas Frydrych  <tf@openedhand.com>
+ *
+ * Copyright (C) 2007 OpenedHand
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:clutter-real
+ * @short_description: An abstract numeric type encapsulating either float
+ * or fixed point number, depending whether clutter was configured using
+ * FPU or not.
+ *
+ * Since: 0.4
+ */
+
+#ifndef _HAVE_CLUTTER_REAL_H
+#define _HAVE_CLUTTER_REAL_H
+
+#include "clutter-fixed.h"
+
+#if 1
+#if CLUTTER_NO_FPU
+
+#define CLUTTER_REAL_IS_FIXED() 1
+#define CLUTTER_REAL_IS_FLOAT() 0
+
+typedef ClutterFixed ClutterReal;
+
+#define CLUTTER_REAL_MUL(x,y) CFX_MUL((x),(y))
+#define CLUTTER_REAL_DIV(x,y) CFX_DIV((x),(y))
+#define CLUTTER_REAL_ADD_INT(x,i) ((x) + CLUTTER_INT_TO_FIXED(i))
+#define CLUTTER_REAL_SUB_INT(x,i) ((x) - CLUTTER_INT_TO_FIXED(i))
+
+#define CLUTTER_REAL_TO_INT(x) CFX_INT((x) + (CFX_ONE >> 1))
+#define CLUTTER_REAL_FROM_INT(i) CLUTTER_INT_TO_FIXED(i)
+
+#define CLUTTER_REAL_TO_FLOAT(x) CLUTTER_FIXED_TO_FLOAT(x)
+#define CLUTTER_REAL_FROM_FLOAT(f) CLUTTER_FLOAT_TO_FIXED(f)
+
+#define CLUTTER_REAL_TO_FIXED(x) (x)
+#define CLUTTER_REAL_FROM_FIXED(x) (x)
+
+#define CLUTTER_REAL_ZERO 0
+
+#else
+
+#define CLUTTER_REAL_IS_FIXED() 0
+#define CLUTTER_REAL_IS_FLOAT() 1
+
+typedef float ClutterReal;
+
+#define CLUTTER_REAL_MUL(x,y) ((x)*(y))
+#define CLUTTER_REAL_DIV(x,y) ((x)/(y))
+#define CLUTTER_REAL_ADD_INT(x,i) (x+i)
+#define CLUTTER_REAL_SUB_INT(x,i) (x-i)
+
+#define CLUTTER_REAL_TO_INT(x) CLUTTER_FLOAT_TO_INT(x+0.5)
+#define CLUTTER_REAL_FROM_INT(i) ((float)i)
+
+#define CLUTTER_REAL_TO_FLOAT(x) (x)
+#define CLUTTER_REAL_FROM_FLOAT(f) (f)
+
+#define CLUTTER_REAL_TO_FIXED(x) CLLUTER_FLOAT_TO_FIXED(x)
+#define CLUTTER_REAL_FROM_FIXED(x) CLUTTER_FIXED_TO_FLOAT(x)
+
+#define CLUTTER_REAL_ZERO 0.0
+
+#endif
+
+#else
+/*
+ * This is an int defintion for reference / debugging purposes only
+ *
+ * FIXME : remove this when no longer needed.
+ */
+typedef gint ClutterReal;
+
+#define CLUTTER_REAL_MUL(x,y) ((x)*(y))
+#define CLUTTER_REAL_DIV(x,y) ((x)/(y))
+#define CLUTTER_REAL_ADD_INT(x,i) (x + i)
+#define CLUTTER_REAL_SUB_INT(x,i) (x - i)
+
+#define CLUTTER_REAL_TO_INT(x) (x)
+#define CLUTTER_REAL_FROM_INT(i) (i)
+
+#define CLUTTER_REAL_TO_FLOAT(x) ((float)(x))
+#define CLUTTER_REAL_FROM_FLOAT(f) ((gint)(f))
+
+#define CLUTTER_REAL_TO_FIXED(x) CLUTTER_INT_TO_FIXED(x)
+#define CLUTTER_REAL_FROM_FIXED(x) CFX_INT(x)
+
+#define CLUTTER_REAL_ZERO 0
+
+#endif
+
+#define CLUTTER_REAL_EZ(x) (CLUTTER_REAL_TO_INT(x) == 0)
+#define CLUTTER_REAL_NZ(x) (CLUTTER_REAL_TO_INT(x) != 0)
+#define CLUTTER_REAL_EQ(x,y) (CLUTTER_REAL_TO_INT(x) == CLUTTER_REAL_TO_INT(y))
+#define CLUTTER_REAL_NE(x,y) (CLUTTER_REAL_TO_INT(x) != CLUTTER_REAL_TO_INT(y))
+#define CLUTTER_REAL_LT(x,y) (CLUTTER_REAL_TO_INT(x) < CLUTTER_REAL_TO_INT(y))
+#define CLUTTER_REAL_GT(x,y) (CLUTTER_REAL_TO_INT(x) > CLUTTER_REAL_TO_INT(y))
+#define CLUTTER_REAL_LE(x,y) (CLUTTER_REAL_TO_INT(x) <= CLUTTER_REAL_TO_INT(y))
+#define CLUTTER_REAL_GE(x,y) (CLUTTER_REAL_TO_INT(x) >= CLUTTER_REAL_TO_INT(y))
+
+#endif /* ifndef _HAVE_CLUTTER_REAL_H */