libavutil/intfloat_readwrite.h

   1 /*
   2  * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef AVUTIL_INTFLOAT_READWRITE_H
  22 #define AVUTIL_INTFLOAT_READWRITE_H
  23
  24 #include <stdint.h>
  25 #include "common.h"
  26
  27 /* IEEE 80 bits extended float */
  28 typedef struct AVExtFloat  {
  29     uint8_t exponent[2];
  30     uint8_t mantissa[8];
  31 } AVExtFloat;
  32
  33 double av_int2dbl(int64_t v) av_const;
  34 float av_int2flt(int32_t v) av_const;
  35 double av_ext2dbl(const AVExtFloat ext) av_const;
  36 int64_t av_dbl2int(double d) av_const;
  37 int32_t av_flt2int(float d) av_const;
  38 AVExtFloat av_dbl2ext(double d) av_const;
  39
  40 #endif /* AVUTIL_INTFLOAT_READWRITE_H */