toolame-02l/ieeefloat.h

   1 #ifndef IEEE_FLOAT_H__
   2 #define IEEE_FLOAT_H__
   3 /* Copyright (C) 1988-1991 Apple Computer, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Warranty Information
   7  * Even though Apple has reviewed this software, Apple makes no warranty
   8  * or representation, either express or implied, with respect to this
   9  * software, its quality, accuracy, merchantability, or fitness for a
  10  * particular purpose.  As a result, this software is provided "as is,"
  11  * and you, its user, are assuming the entire risk as to its quality
  12  * and accuracy.
  13  *
  14  * This code may be used and freely distributed as long as it includes
  15  * this copyright notice and the warranty information.
  16  *
  17  * Machine-independent I/O routines for IEEE FLOATing-point numbers.
  18  *
  19  * NaN's and infinities are converted to HUGE_VAL or HUGE, which
  20  * happens to be infinity on IEEE machines.  Unfortunately, it is
  21  * impossible to preserve NaN's in a machine-independent way.
  22  * Infinities are, however, preserved on IEEE machines.
  23  *
  24  * These routines have been tested on the following machines:
  25  *      Apple Macintosh, MPW 3.1 C compiler
  26  *      Apple Macintosh, THINK C compiler
  27  *      Silicon Graphics IRIS, MIPS compiler
  28  *      Cray X/MP and Y/MP
  29  *      Digital Equipment VAX
  30  *      Sequent Balance (Multiprocesor 386)
  31  *      NeXT
  32  *
  33  *
  34  * Implemented by Malcolm Slaney and Ken Turkowski.
  35  *
  36  * Malcolm Slaney contributions during 1988-1990 include big- and little-
  37  * endian file I/O, conversion to and from Motorola's extended 80-bit
  38  * FLOATing-point format, and conversions to and from IEEE single-
  39  * precision FLOATing-point format.
  40  *
  41  * In 1991, Ken Turkowski implemented the conversions to and from
  42  * IEEE double-precision format, added more precision to the extended
  43  * conversions, and accommodated conversions involving +/- infinity,
  44  * NaN's, and denormalized numbers.
  45  *
  46  * $Id: ieeefloat.h,v 1.1 2003/10/04 00:11:19 herman Exp $
  47  *
  48  * $Log: ieeefloat.h,v $
  49  * Revision 1.1  2003/10/04 00:11:19  herman
  50  * New file from 1.1.7 (not in 1.1.6) added from Rich's automakified src tree.
  51  *
  52  * Revision 1.1  2003/07/29 04:17:52  heroine
  53  * *** empty log message ***
  54  *
  55  * Revision 1.1  1993/06/11  17:45:46  malcolm
  56  * Initial revision
  57  *
  58  */
  59
  60 #include        <math.h>
  61
  62 typedef float Single;
  63
  64 #define kFloatLength    4
  65 #define kDoubleLength   8
  66 #define kExtendedLength 10
  67
  68 double ConvertFromIeeeExtended (char *bytes);
  69 #endif