QD (Library)
Introduction
QD is a package that supports both a double-double datatype with about 32 decimal digits,
and a quad-double datatype with about 64 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.
Availability Table
| System | Versions |
|---|---|
| mosaic | 2.3.13, 2.3.17 |
| copper | 2.3.13, 2.3.17 |
| goblin | 2.3.13, 2.3.17 |
| wobbie | 2.3.13, 2.3.17 |
| vdi-centos6 | 2.3.13, 2.3.17 |
| iqaluk | 2.3.13, 2.3.17 |
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Change Log
o Oct 1, 2015: Installed qd/intel1503/2.3.17 on angel, brown, copper, goblin, iqaluk, kraken, monk, mosaic, orca, redfin, saw, tembo, windeee and wobbie. Installed qd/intel/2.3.13 on vdi-centos6, copper and mosaic.
Jan 9, 2014: Installed qd/2.3.13 on wobbie.
Jun 3, 2013: Removed qd/2.3.8 from angel, goblin, hound, kraken, requin, saw and tope
Apr 22, 2013: Installed qd/2.3.13 on angel, brown, goblin, hound, iqaluk, monk, orca, redfin and saw.