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Floating

setting precision for stringstream

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Floating    122
Hi, How can I set the number of digits after the decimal point in the following example? std::string str; std::stringstream stream; float floatVal=12.012345675f stream << floatal; Thanks

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Fruny    1658
streamsize ios_base:: precision() const;
- Returns the precision.
streamsize ios_base:: precision(streamsize prec);
- Sets the precision, returns the previously used precision.
stream.precision(5);
stream << floatVal;

or use the std::setprecision(int n) manipulator.
stream << std::setprecision(5) << floatVal;  

Or just use boost::format - it's much easier
boost::format fmt( "%.5f" );
stream << fmt % floatVal;



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[edited by - Fruny on October 10, 2003 4:19:08 AM]

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