doubledouble
doubledouble is a C++ software package which implements doubled-double (approximately 30 decimal place) floating point arithmetic on IEEE 754 floating-point hardware. This version includes many improvements suggested by Stefan Bauberger, Roger Schlafly, Wayne Hayes, Victor Shoup, Tony Dixon, and Alan Miller. These include new functions, portability enhancements and improvements to many details. This is a development of code formerly released as `Quad version 2.0'. The name Quad has been dropped as the code does NOT implement the IEEE quadruple precision format. The name `doubledouble' was chosen instead since it is distinctive and reminds one that an unusual data type is being used, and it describes the format of two adjacent doubles.
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Current Version: 2.2
License Type: GPL
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