String CDatabaseConnectionMySql::DoWriteFloat( float value ) const
{
StringStream stream;
uint32_t decimals = GetPrecision( EFieldType_FLOAT32 );
stream << STR( "CAST( " );
stream.precision( decimals * 2 );
stream << value;
// float min == -3.40282e+038 => 39 digits before decimals separator
stream << STR( " AS DECIMAL( " ) << ( 39 + decimals ) << STR( ", " ) << decimals << STR( " ) )" );
return stream.str();
}
//-----------------------------------------------------------------------
String StringConverter::toString(double val, unsigned short precision,
unsigned short width, char fill, std::ios::fmtflags flags)
{
StringStream stream;
stream.precision(precision);
stream.width(width);
stream.fill(fill);
if (flags)
stream.setf(flags);
stream << val;
return stream.str();
}
//-----------------------------------------------------------------------
String StringConverter::toString(float val, unsigned short precision,
unsigned short width, char fill, std::ios::fmtflags flags)
{
StringStream stream;
if (msUseLocale)
stream.imbue(msLocale);
stream.precision(precision);
stream.width(width);
stream.fill(fill);
if (flags)
stream.setf(flags);
stream << val;
return stream.str();
}
