ftmisc.h

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/***************************************************************************/
/*                                                                         */
/*  ftmisc.h                                                               */
/*                                                                         */
/*    Miscellaneous macros for stand-alone rasterizer (specification       */
/*    only).                                                               */
/*                                                                         */
/*  Copyright 2005-2018 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.                                        */
/*                                                                         */
/***************************************************************************/
 
 
  /***************************************************/
  /*                                                 */
  /* This file is *not* portable!  You have to adapt */
  /* its definitions to your platform.               */
  /*                                                 */
  /***************************************************/
 
#ifndef FTMISC_H_
#define FTMISC_H_
 
 
  /* memset */
#include FT_CONFIG_STANDARD_LIBRARY_H
 
#define FT_BEGIN_HEADER
#define FT_END_HEADER
 
#define FT_LOCAL_DEF( x )   static x
 
 
  /* from include/freetype/fttypes.h */
 
  typedef unsigned char  FT_Byte;
  typedef signed int     FT_Int;
  typedef unsigned int   FT_UInt;
  typedef signed long    FT_Long;
  typedef unsigned long  FT_ULong;
  typedef signed long    FT_F26Dot6;
  typedef int            FT_Error;
 
#define FT_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
          ( ( (FT_ULong)_x1 << 24 ) |     \
            ( (FT_ULong)_x2 << 16 ) |     \
            ( (FT_ULong)_x3 <<  8 ) |     \
              (FT_ULong)_x4         )
 
 
  /* from include/freetype/ftsystem.h */
 
  typedef struct FT_MemoryRec_*  FT_Memory;
 
  typedef void* (*FT_Alloc_Func)( FT_Memory  memory,
                                  long       size );
 
  typedef void (*FT_Free_Func)( FT_Memory  memory,
                                void*      block );
 
  typedef void* (*FT_Realloc_Func)( FT_Memory  memory,
                                    long       cur_size,
                                    long       new_size,
                                    void*      block );
 
  typedef struct FT_MemoryRec_
  {
    void*            user;
 
    FT_Alloc_Func    alloc;
    FT_Free_Func     free;
    FT_Realloc_Func  realloc;
 
  } FT_MemoryRec;
 
 
  /* from src/ftcalc.c */
 
#if ( defined _WIN32 || defined _WIN64 )
 
  typedef __int64  FT_Int64;
 
#else
 
#include "inttypes.h"
 
  typedef int64_t  FT_Int64;
 
#endif
 
 
  static FT_Long
  FT_MulDiv( FT_Long  a,
             FT_Long  b,
             FT_Long  c )
  {
    FT_Int   s;
    FT_Long  d;
 
 
    s = 1;
    if ( a < 0 ) { a = -a; s = -1; }
    if ( b < 0 ) { b = -b; s = -s; }
    if ( c < 0 ) { c = -c; s = -s; }
 
    d = (FT_Long)( c > 0 ? ( (FT_Int64)a * b + ( c >> 1 ) ) / c
                         : 0x7FFFFFFFL );
 
    return ( s > 0 ) ? d : -d;
  }
 
 
  static FT_Long
  FT_MulDiv_No_Round( FT_Long  a,
                      FT_Long  b,
                      FT_Long  c )
  {
    FT_Int   s;
    FT_Long  d;
 
 
    s = 1;
    if ( a < 0 ) { a = -a; s = -1; }
    if ( b < 0 ) { b = -b; s = -s; }
    if ( c < 0 ) { c = -c; s = -s; }
 
    d = (FT_Long)( c > 0 ? (FT_Int64)a * b / c
                         : 0x7FFFFFFFL );
 
    return ( s > 0 ) ? d : -d;
  }
 
#endif /* FTMISC_H_ */
 
 
/* END */