kc3-lang/freetype/src/cff/cf2fixed.h

• Show log

  Commit

• Hash : 4e07516e
  Author :
  Date : 2016-12-14T18:25:44
  

  [sfnt, cff] Minor preparations. * include/freetype/tttags.h (TTAG_CFF2, TTAG_HVAR, TTAG_MVAR, TTAG_VVAR): New SFNT table tags. * src/cff/cf2fixed.h (CF2_FIXED_ONE, CF2_FIXED_EPSILON): Add cast.

Download

• src/cff/cf2fixed.h

• /***************************************************************************/
  /*                                                                         */
  /*  cf2fixed.h                                                             */
  /*                                                                         */
  /*    Adobe's code for Fixed Point Mathematics (specification only).       */
  /*                                                                         */
  /*  Copyright 2007-2013 Adobe Systems Incorporated.                        */
  /*                                                                         */
  /*  This software, and all works of authorship, whether in source or       */
  /*  object code form as indicated by the copyright notice(s) included      */
  /*  herein (collectively, the "Work") is made available, and may only be   */
  /*  used, modified, and distributed under the FreeType Project License,    */
  /*  LICENSE.TXT.  Additionally, subject to the terms and conditions of the */
  /*  FreeType Project License, each contributor to the Work hereby grants   */
  /*  to any individual or legal entity exercising permissions granted by    */
  /*  the FreeType Project License and this section (hereafter, "You" or     */
  /*  "Your") a perpetual, worldwide, non-exclusive, no-charge,              */
  /*  royalty-free, irrevocable (except as stated in this section) patent    */
  /*  license to make, have made, use, offer to sell, sell, import, and      */
  /*  otherwise transfer the Work, where such license applies only to those  */
  /*  patent claims licensable by such contributor that are necessarily      */
  /*  infringed by their contribution(s) alone or by combination of their    */
  /*  contribution(s) with the Work to which such contribution(s) was        */
  /*  submitted.  If You institute patent litigation against any entity      */
  /*  (including a cross-claim or counterclaim in a lawsuit) alleging that   */
  /*  the Work or a contribution incorporated within the Work constitutes    */
  /*  direct or contributory patent infringement, then any patent licenses   */
  /*  granted to You under this License for that Work shall terminate as of  */
  /*  the date such litigation is filed.                                     */
  /*                                                                         */
  /*  By using, modifying, or distributing the Work you indicate that you    */
  /*  have read and understood the terms and conditions of the               */
  /*  FreeType Project License as well as those provided in this section,    */
  /*  and you accept them fully.                                             */
  /*                                                                         */
  /***************************************************************************/
  
  
  #ifndef CF2FIXED_H_
  #define CF2FIXED_H_
  
  
  FT_BEGIN_HEADER
  
  
    /* rasterizer integer and fixed point arithmetic must be 32-bit */
  
  #define   CF2_Fixed  CF2_F16Dot16
    typedef FT_Int32   CF2_Frac;   /* 2.30 fixed point */
  
  
  #define CF2_FIXED_MAX      ( (CF2_Fixed)0x7FFFFFFFL )
  #define CF2_FIXED_MIN      ( (CF2_Fixed)0x80000000L )
  #define CF2_FIXED_ONE      ( (CF2_Fixed)0x10000L )
  #define CF2_FIXED_EPSILON  ( (CF2_Fixed)0x0001 )
  
    /* in C 89, left and right shift of negative numbers is  */
    /* implementation specific behaviour in the general case */
  
  #define cf2_intToFixed( i )                                              \
            ( (CF2_Fixed)( (FT_UInt32)(i) << 16 ) )
  #define cf2_fixedToInt( x )                                              \
            ( (FT_Short)( ( (FT_UInt32)(x) + 0x8000U ) >> 16 ) )
  #define cf2_fixedRound( x )                                              \
            ( (CF2_Fixed)( ( (FT_UInt32)(x) + 0x8000U ) & 0xFFFF0000UL ) )
  #define cf2_floatToFixed( f )                                            \
            ( (CF2_Fixed)( (f) * 65536.0 + 0.5 ) )
  #define cf2_fixedAbs( x )                                                \
            ( (x) < 0 ? -(x) : (x) )
  #define cf2_fixedFloor( x )                                              \
            ( (CF2_Fixed)( (FT_UInt32)(x) & 0xFFFF0000UL ) )
  #define cf2_fixedFraction( x )                                           \
            ( (x) - cf2_fixedFloor( x ) )
  #define cf2_fracToFixed( x )                                             \
            ( (x) < 0 ? -( ( -(x) + 0x2000 ) >> 14 )                       \
                      :  ( (  (x) + 0x2000 ) >> 14 ) )
  
  
    /* signed numeric types */
    typedef enum  CF2_NumberType_
    {
      CF2_NumberFixed,    /* 16.16 */
      CF2_NumberFrac,     /*  2.30 */
      CF2_NumberInt       /* 32.0  */
  
    } CF2_NumberType;
  
  
  FT_END_HEADER
  
  
  #endif /* CF2FIXED_H_ */
  
  
  /* END */
  

Download