kc3-lang/freetype/src/psaux/psfixed.h

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• Hash : 9ac9060d
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  Date : 2018-06-03T09:01:17
  

  [GSoC] src/*.*: Convert block comments to `light' style. This monster commit was created by applying Nikhil's scripts `docconverter.py' and `markify.py' to all C header and source files, followed up by minor manual clean-up. No change in functionality, of course. I used commit f7419907bc6044b9b7057f9789866426c804ba82 from https://github.com/nikramakrishnan/freetype-docs.git.

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• src/psaux/psfixed.h

• /****************************************************************************
   *
   * psfixed.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 PSFIXED_H_
  #define PSFIXED_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_doubleToFixed( f )                                           \
            ( (CF2_Fixed)( (f) * 65536.0 + 0.5 ) )
  #define cf2_fixedAbs( x )                                                \
            ( (x) < 0 ? NEG_INT32( 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 /* PSFIXED_H_ */
  
  
  /* END */
  

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