--- a/misc/libfreetype/include/freetype/internal/ftcalc.h Tue Jul 16 11:14:27 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,179 +0,0 @@
-/***************************************************************************/
-/* */
-/* ftcalc.h */
-/* */
-/* Arithmetic computations (specification). */
-/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-
-#ifndef __FTCALC_H__
-#define __FTCALC_H__
-
-
-#include <ft2build.h>
-#include FT_FREETYPE_H
-
-
-FT_BEGIN_HEADER
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_FixedSqrt */
- /* */
- /* <Description> */
- /* Computes the square root of a 16.16 fixed point value. */
- /* */
- /* <Input> */
- /* x :: The value to compute the root for. */
- /* */
- /* <Return> */
- /* The result of `sqrt(x)'. */
- /* */
- /* <Note> */
- /* This function is not very fast. */
- /* */
- FT_BASE( FT_Int32 )
- FT_SqrtFixed( FT_Int32 x );
-
-
-#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Sqrt32 */
- /* */
- /* <Description> */
- /* Computes the square root of an Int32 integer (which will be */
- /* handled as an unsigned long value). */
- /* */
- /* <Input> */
- /* x :: The value to compute the root for. */
- /* */
- /* <Return> */
- /* The result of `sqrt(x)'. */
- /* */
- FT_EXPORT( FT_Int32 )
- FT_Sqrt32( FT_Int32 x );
-
-#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
-
-
- /*************************************************************************/
- /* */
- /* FT_MulDiv() and FT_MulFix() are declared in freetype.h. */
- /* */
- /*************************************************************************/
-
-
-#ifdef TT_USE_BYTECODE_INTERPRETER
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_MulDiv_No_Round */
- /* */
- /* <Description> */
- /* A very simple function used to perform the computation `(a*b)/c' */
- /* (without rounding) with maximal accuracy (it uses a 64-bit */
- /* intermediate integer whenever necessary). */
- /* */
- /* This function isn't necessarily as fast as some processor specific */
- /* operations, but is at least completely portable. */
- /* */
- /* <Input> */
- /* a :: The first multiplier. */
- /* b :: The second multiplier. */
- /* c :: The divisor. */
- /* */
- /* <Return> */
- /* The result of `(a*b)/c'. This function never traps when trying to */
- /* divide by zero; it simply returns `MaxInt' or `MinInt' depending */
- /* on the signs of `a' and `b'. */
- /* */
- FT_BASE( FT_Long )
- FT_MulDiv_No_Round( FT_Long a,
- FT_Long b,
- FT_Long c );
-
-#endif /* TT_USE_BYTECODE_INTERPRETER */
-
-
- /*
- * A variant of FT_Matrix_Multiply which scales its result afterwards.
- * The idea is that both `a' and `b' are scaled by factors of 10 so that
- * the values are as precise as possible to get a correct result during
- * the 64bit multiplication. Let `sa' and `sb' be the scaling factors of
- * `a' and `b', respectively, then the scaling factor of the result is
- * `sa*sb'.
- */
- FT_BASE( void )
- FT_Matrix_Multiply_Scaled( const FT_Matrix* a,
- FT_Matrix *b,
- FT_Long scaling );
-
-
- /*
- * A variant of FT_Vector_Transform. See comments for
- * FT_Matrix_Multiply_Scaled.
- */
-
- FT_BASE( void )
- FT_Vector_Transform_Scaled( FT_Vector* vector,
- const FT_Matrix* matrix,
- FT_Long scaling );
-
-
- /*
- * Return -1, 0, or +1, depending on the orientation of a given corner.
- * We use the Cartesian coordinate system, with positive vertical values
- * going upwards. The function returns +1 if the corner turns to the
- * left, -1 to the right, and 0 for undecidable cases.
- */
- FT_BASE( FT_Int )
- ft_corner_orientation( FT_Pos in_x,
- FT_Pos in_y,
- FT_Pos out_x,
- FT_Pos out_y );
-
- /*
- * Return TRUE if a corner is flat or nearly flat. This is equivalent to
- * saying that the angle difference between the `in' and `out' vectors is
- * very small.
- */
- FT_BASE( FT_Int )
- ft_corner_is_flat( FT_Pos in_x,
- FT_Pos in_y,
- FT_Pos out_x,
- FT_Pos out_y );
-
-
-#define INT_TO_F26DOT6( x ) ( (FT_Long)(x) << 6 )
-#define INT_TO_F2DOT14( x ) ( (FT_Long)(x) << 14 )
-#define INT_TO_FIXED( x ) ( (FT_Long)(x) << 16 )
-#define F2DOT14_TO_FIXED( x ) ( (FT_Long)(x) << 2 )
-#define FLOAT_TO_FIXED( x ) ( (FT_Long)( x * 65536.0 ) )
-#define FIXED_TO_INT( x ) ( FT_RoundFix( x ) >> 16 )
-
-#define ROUND_F26DOT6( x ) ( x >= 0 ? ( ( (x) + 32 ) & -64 ) \
- : ( -( ( 32 - (x) ) & -64 ) ) )
-
-
-FT_END_HEADER
-
-#endif /* __FTCALC_H__ */
-
-
-/* END */