diff options
Diffstat (limited to 'svl/source/numbers/zformat.cxx')
| -rw-r--r-- | svl/source/numbers/zformat.cxx | 52 |
1 files changed, 35 insertions, 17 deletions
diff --git a/svl/source/numbers/zformat.cxx b/svl/source/numbers/zformat.cxx index 2dc1c54b86cc..eccf63f917d5 100644 --- a/svl/source/numbers/zformat.cxx +++ b/svl/source/numbers/zformat.cxx @@ -54,6 +54,11 @@ char const GREGORIAN[] = "gregorian"; const sal_uInt16 UPPER_PRECISION = 300; // entirely arbitrary... const double EXP_LOWER_BOUND = 1.0E-4; // prefer scientific notation below this value. +const double EXP_ABS_UPPER_BOUND = 1.0E15; // use exponential notation above that absolute value. + // Back in time was E16 that lead + // to display rounding errors, see + // also sal/rtl/math.cxx + // doubleToString() } // namespace @@ -1733,7 +1738,7 @@ void SvNumberformat::ImpGetOutputStandard(double& fNumber, OUString& rOutString) { sal_uInt16 nStandardPrec = rScan.GetStandardPrec(); - if ( fabs(fNumber) > 1.0E15 ) // #58531# was E16 + if ( fabs(fNumber) > EXP_ABS_UPPER_BOUND ) { nStandardPrec = ::std::min(nStandardPrec, static_cast<sal_uInt16>(14)); // limits to 14 decimals rOutString = ::rtl::math::doubleToUString( fNumber, @@ -2126,27 +2131,40 @@ bool SvNumberformat::GetOutputString(double fNumber, } fNumber = -fNumber; } + /* TODO: why did we insist on 10 decimals for the non-exponent + * case? doubleToUString() handles rtl_math_DecimalPlaces_Max + * gracefully when used with rtl_math_StringFormat_Automatic, + * so all that special casing and mumbo-jumbo in the else + * branch below might not be needed at all. */ + if (fNumber > EXP_ABS_UPPER_BOUND) + { + sBuff.append( ::rtl::math::doubleToUString( fNumber, + rtl_math_StringFormat_Automatic, + rtl_math_DecimalPlaces_Max, + GetFormatter().GetNumDecimalSep()[0], true)); + } + else { OUString sTemp; ImpGetOutputStdToPrecision(fNumber, sTemp, 10); // Use 10 decimals for general 'unlimited' format. sBuff.append(sTemp); - } - if (fNumber < EXP_LOWER_BOUND) - { - sal_Int32 nLen = sBuff.getLength(); - if (!nLen) + if (fNumber < EXP_LOWER_BOUND) { - return false; - } - // #i112250# With the 10-decimal limit, small numbers are formatted as "0". - // Switch to scientific in that case, too: - if (nLen > 11 || ((nLen == 1 && sBuff[0] == '0') && fNumber != 0.0)) - { - sal_uInt16 nStandardPrec = rScan.GetStandardPrec(); - nStandardPrec = ::std::min(nStandardPrec, static_cast<sal_uInt16>(14)); // limits to 14 decimals - sBuff = ::rtl::math::doubleToUString( fNumber, - rtl_math_StringFormat_E2, nStandardPrec /*2*/, - GetFormatter().GetNumDecimalSep()[0], true); + sal_Int32 nLen = sBuff.getLength(); + if (!nLen) + { + return false; + } + // #i112250# With the 10-decimal limit, small numbers are formatted as "0". + // Switch to scientific in that case, too: + if (nLen > 11 || ((nLen == 1 && sBuff[0] == '0') && fNumber != 0.0)) + { + sal_uInt16 nStandardPrec = rScan.GetStandardPrec(); + nStandardPrec = ::std::min(nStandardPrec, static_cast<sal_uInt16>(14)); // limits to 14 decimals + sBuff = ::rtl::math::doubleToUString( fNumber, + rtl_math_StringFormat_E2, nStandardPrec /*2*/, + GetFormatter().GetNumDecimalSep()[0], true); + } } } if (bSign) |