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Improve double values to string convertor to perform smart rounding of values.

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This commit is contained in:
vsr 2008-06-19 09:21:03 +00:00
parent 6ceddcd35e
commit 09e9d9d991
1 changed files with 14 additions and 0 deletions
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14
src/DlgRef/DlgRef_SpinBox.cxx
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@ -29,6 +29,7 @@
#include "DlgRef_SpinBox.h" #include "DlgRef_SpinBox.h"
#include <qvalidator.h> #include <qvalidator.h>
#include <math.h>
//================================================================================= //=================================================================================
// class : DlgRef_SpinBox() // class : DlgRef_SpinBox()
@ -105,9 +106,22 @@ void DlgRef_SpinBox::RangeStepAndValidator(double min, double max,double step,
QString DlgRef_SpinBox::PrintDoubleValue (double theValue, int thePrecision) QString DlgRef_SpinBox::PrintDoubleValue (double theValue, int thePrecision)
{ {
const double prec = 1e-12;
QString aRes; QString aRes;
aRes.setNum(theValue, 'g', thePrecision); aRes.setNum(theValue, 'g', thePrecision);
if ( prec > 0 ) {
int p = 0;
while ( p < thePrecision ) {
aRes.setNum( theValue, 'g', p++ );
double v = aRes.toDouble();
double err = fabs( theValue - v );
if ( err > 0 && err <= prec )
break;
}
}
// remove trailing zeroes // remove trailing zeroes
QString delim( "." ); QString delim( "." );