icuSources/i18n/fmtableimp.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *******************************************************************************
   5 * Copyright (C) 2010-2014, International Business Machines Corporation and    *
   6 * others. All Rights Reserved.                                                *
   7 *******************************************************************************
   8 */
   9
  10 #ifndef FMTABLEIMP_H
  11 #define FMTABLEIMP_H
  12
  13 #include "number_decimalquantity.h"
  14
  15 #if !UCONFIG_NO_FORMATTING
  16
  17 U_NAMESPACE_BEGIN
  18
  19 /**
  20  * Maximum int64_t value that can be stored in a double without chancing losing precision.
  21  *   IEEE doubles have 53 bits of mantissa, 10 bits exponent, 1 bit sign.
  22  *   IBM Mainframes have 56 bits of mantissa, 7 bits of base 16 exponent, 1 bit sign.
  23  * Define this constant to the smallest value from those for supported platforms.
  24  * @internal
  25  */
  26 static const int64_t MAX_INT64_IN_DOUBLE = 0x001FFFFFFFFFFFFFLL;
  27
  28 U_NAMESPACE_END
  29
  30 #endif // #if !UCONFIG_NO_FORMATTING
  31 #endif