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* for interconverting 'double' and the integer types.
*
* Copyright (c) 2005 by Kevin B. Kenny. All rights reserved.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclStrToD.c,v 1.4 2005/05/11 15:39:50 kennykb Exp $
* RCS: @(#) $Id: tclStrToD.c,v 1.5 2005/06/26 22:10:08 dkf Exp $
*
*----------------------------------------------------------------------
*/
#include <tclInt.h>
#include <stdio.h>
#include <stdlib.h>
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# define NAN_START 0x7ff4
# define NAN_MASK (((Tcl_WideUInt) 1) << 50)
#else
# define NAN_START 0x7ff8
# define NAN_MASK (((Tcl_WideUInt) 1) << 51)
#endif
/*
* There now follows a lot of static variables that are shared across all
* threads but which are not guarded by mutexes. This is OK, because they are
* only ever assigned _ONCE_ during Tcl's library initialization sequence.
*/
/* The powers of ten that can be represented exactly as IEEE754 doubles. */
#define MAXPOW 22
static double pow10 [MAXPOW+1];
static int mmaxpow; /* Largest power of ten that can be
* represented exactly in a 'double'. */
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