| 0,0 → 1,97 |
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| /******************************************************************* |
| * |
| * ttcalc.h |
| * |
| * Arithmetic Computations (specification). |
| * |
| * Copyright 1996-1999 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 TTCALC_H |
| #define TTCALC_H |
| |
| #include "ttconfig.h" |
| #include "freetype.h" |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifdef LONG64 |
| |
| typedef INT64 TT_Int64; |
| |
| #define ADD_64( x, y, z ) z = x + y |
| #define SUB_64( x, y, z ) z = x - y |
| #define MUL_64( x, y, z ) z = (TT_Int64)(x) * (y) |
| |
| #define DIV_64( x, y ) ( (x) / (y) ) |
| |
| #define SQRT_64( x ) Sqrt64( x ) |
| #define SQRT_32( x ) Sqrt32( x ) |
| |
| LOCAL_DEF TT_Int32 Sqrt64( TT_Int64 l ); |
| |
| #else /* LONG64 */ |
| |
| struct TT_Int64_ |
| { |
| TT_Word32 lo; |
| TT_Word32 hi; |
| }; |
| |
| typedef struct TT_Int64_ TT_Int64; |
| |
| #define ADD_64( x, y, z ) Add64( &x, &y, &z ) |
| #define SUB_64( x, y, z ) Sub64( &x, &y, &z ) |
| #define MUL_64( x, y, z ) MulTo64( x, y, &z ) |
| |
| #define DIV_64( x, y ) Div64by32( &x, y ) |
| |
| #define SQRT_64( x ) Sqrt64( &x ) |
| #define SQRT_32( x ) Sqrt32( x ) |
| |
| LOCAL_DEF void Add64( TT_Int64* x, TT_Int64* y, TT_Int64* z ); |
| LOCAL_DEF void Sub64( TT_Int64* x, TT_Int64* y, TT_Int64* z ); |
| |
| LOCAL_DEF void MulTo64( TT_Int32 x, TT_Int32 y, TT_Int64* z ); |
| |
| LOCAL_DEF TT_Int32 Div64by32( TT_Int64* x, TT_Int32 y ); |
| |
| LOCAL_DEF int Order64( TT_Int64* z ); |
| |
| LOCAL_DEF TT_Int32 Sqrt64( TT_Int64* l ); |
| |
| #endif /* LONG64 */ |
| |
| /* The two following functions are now part of the API! */ |
| |
| /* TT_Long TT_MulDiv( TT_Long a, TT_Long b, TT_Long c ); */ |
| /* TT_Long TT_MulFix( TT_Long a, TT_Long b ); */ |
| |
| |
| #define INT_TO_F26DOT6( x ) ( (Long)(x) << 6 ) |
| #define INT_TO_F2DOT14( x ) ( (Long)(x) << 14 ) |
| #define INT_TO_FIXED( x ) ( (Long)(x) << 16 ) |
| #define F2DOT14_TO_FIXED( x ) ( (Long)(x) << 2 ) |
| #define FLOAT_TO_FIXED( x ) ( (Long)(x * 65536.0) ) |
| |
| #define ROUND_F26DOT6( x ) ( x >= 0 ? ( ((x) + 32) & -64) \ |
| : ( -((32 - (x)) & -64) ) ) |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* TTCALC_H */ |
| |
| /* END */ |