FreeType 1.31.1

2023-08-27 18:03:45 +02:00
commit 5edbb7a80a
454 changed files with 173977 additions and 0 deletions
--- a/lib/ttcalc.h
+++ b/lib/ttcalc.h
@@ -0,0 +1,97 @@
+/*******************************************************************
+ *
+ *  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 */