gabincvt.h

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// $Header: /usr/people/mbwall/src/galib/ga/RCS/gabincvt.h,v 1.2 1998/10/05 21:30:09 mbwall Exp $
/* ----------------------------------------------------------------------------
  bincvt.h
  mbwall 29jun95
  Copyright (c) 1995 Massachusetts Institute of Technology
                     all rights reserved

 DESCRIPTION:
  Header for the binary to decimal conversion routines.  The binary-to-decimal
routines include encoders and decoders.  We define a standard binary encoder/
decoder set as well as one Gray encoder/decoder.  You can define your own if
you want a different Gray coding.
---------------------------------------------------------------------------- */
#ifndef _ga_bincvt_h_
#define _ga_bincvt_h_

#include <ga/gatypes.h>

// The encoder converts a decimal value into a binary string.  The decoder
// converts a string of bits into a decimal value.  Both types of functions
// return an error code to indicate whether or not the conversion was 
// successful.  The caller must make sure that sufficient space is available
// for the arguments.  The encoder will set the value to whatever it was able
// to encode, so be sure to check the return status and make your value such
// that you can check it if you get a non-zero return code.
typedef int (*GABinaryEncoder)(float& value, GABit* bits,
			       unsigned int nbits, float min, float max);
typedef int (*GABinaryDecoder)(float& value, const GABit* bits,
			       unsigned int nbits, float min, float max);


int GABinaryEncode(float&, GABit* bits, unsigned int, float, float);
int GABinaryDecode(float&, const GABit* bits, unsigned int, float, float);

int GAGrayEncode(float&, GABit* bits, unsigned int, float, float);
int GAGrayDecode(float&, const GABit* bits, unsigned int, float, float);

#endif