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ICU-5852 Improve ability to round denormalized IEEE754 numbers and improve debug output.

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X-SVN-Rev: 22417
This commit is contained in:
George Rhoten 2007-08-17 05:27:19 +00:00
parent a439b9f7f6
commit a0088597b1
3 changed files with 9 additions and 8 deletions
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5
icu4c/source/i18n/numfmt.cpp
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@ -1,6 +1,6 @@
/*
*******************************************************************************
* Copyright (C) 1997-2006, International Business Machines Corporation and *
* Copyright (C) 1997-2007, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*
@ -75,7 +75,8 @@ static const UChar gLastResortScientificPat[] = {
// If the maximum base 10 exponent were 4, then the largest number would
// be 99,999 which has 5 digits.
static const int32_t gMaxIntegerDigits = DBL_MAX_10_EXP + 1; // Should be ~40 ? --srl
// On IEEE754 systems gMaxIntegerDigits is 308 + possible denormalized 15 digits + rounding digit
static const int32_t gMaxIntegerDigits = DBL_MAX_10_EXP + DBL_DIG + 1;
static const int32_t gMinIntegerDigits = 127;
static const UChar * const gLastResortNumberPatterns[] =

4
icu4c/source/test/intltest/intltest.cpp
View File

@ -1,6 +1,6 @@
/********************************************************************
* COPYRIGHT:
* Copyright (c) 1997-2006, International Business Machines Corporation and
* Copyright (c) 1997-2007, International Business Machines Corporation and
* others. All Rights Reserved.
********************************************************************/
@ -114,7 +114,7 @@ operator+(const UnicodeString& left,
// 53*log(2)/log(10) = 15.95
// so there is no need to show more than 16 digits. [alan]
sprintf(buffer, "%.16g", num);
sprintf(buffer, "%.17g", num);
assert(danger == 'p');
return left + buffer;

8
icu4c/source/test/intltest/nmfmtrt.cpp
View File

@ -1,6 +1,6 @@
/***********************************************************************
* COPYRIGHT:
* Copyright (c) 1997-2006, International Business Machines Corporation
* Copyright (c) 1997-2007, International Business Machines Corporation
* and others. All Rights Reserved.
***********************************************************************/
@ -199,7 +199,7 @@ NumberFormatRoundTripTest::test(NumberFormat *fmt)
test(fmt, randomDouble(1e-78)); /*OS390 and OS400*/
# endif
#else
test(fmt, randomDouble(1e-323));
test(fmt, randomDouble(DBL_MIN)); /* Usually 2.2250738585072014e-308 */
#endif /* OS390 and OS400*/
#if !defined(OS390) && !defined(OS400)
test(fmt, randomDouble(1e-100));
@ -283,8 +283,8 @@ NumberFormatRoundTripTest::test(NumberFormat *fmt, const Formattable& value)
if (show) {
errln(/*value.getString(temp) +*/ typeOf(value, temp) + " F> " +
escape(s) + " P> " +
/*n.getString(temp) +*/ typeOf(n, temp) + " F> " +
escape(s) + " P> " + (n.getType() == Formattable::kDouble ? n.getDouble() : (double)n.getLong())
/*n.getString(temp) */ + typeOf(n, temp) + " F> " +
escape(s2));
}
}