newlib/libc/stdio/floatio.h

   1 /*
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that the above copyright notice and this paragraph are
   7  * duplicated in all such forms and that any documentation,
   8  * and/or other materials related to such
   9  * distribution and use acknowledge that the software was developed
  10  * by the University of California, Berkeley.  The name of the
  11  * University may not be used to endorse or promote products derived
  12  * from this software without specific prior written permission.
  13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16  *
  17  *      %W% (Berkeley) %G%
  18  */
  19
  20 /*
  21  * Floating point scanf/printf (input/output) definitions.
  22  */
  23
  24 #ifdef _NO_LONGDBL
  25 /* 11-bit exponent (VAX G floating point) is 308 decimal digits */
  26 #define MAXEXP          308
  27 #else  /* !_NO_LONGDBL */
  28 /* 15-bit exponent (Intel extended floating point) is 4932 decimal digits */
  29 #define MAXEXP          4932
  30 #endif /* !_NO_LONGDBL */
  31 /* 128 bit fraction takes up 39 decimal digits; max reasonable precision */
  32 #define MAXFRACT        39