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c++ Programming Glossary: round_downHow does Excel successfully Rounds Floating numbers even though they are imprecise? http://stackoverflow.com/questions/6930786/how-does-excel-successfully-rounds-floating-numbers-even-though-they-are-impreci double precision register. Hence the volatile. double round_down round_up volatile double corner_case if nplaces 0 double scale.. double corner_case if nplaces 0 double scale pow10 nplaces round_down std floor x scale corner_case round_down 0.5 scale round_up.. pow10 nplaces round_down std floor x scale corner_case round_down 0.5 scale round_up round_down 1.0 scale round_down scale else..
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