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QD is a package that supports both a double-double datatype with about 32 decimal digits,
The library is written by David H. Bailey et. al from the Lawrence Berkeley National Laboratory (see http://crd.lbl.gov/~dhbailey/mpdist).
In addition to the basic arithmetic operations (add, subtract, multiply, divide, square root), common transcendental functions such as the exponential, logarithm, trigonometric and hyperbolic functions are also included.
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None at this time …
Jan 9, 2014: Installed qd/2.3.13 on wobbie.