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OpenFOAM-6/applications
Henry Weller d82cc36c5a OpenFOAM: Added support for extended precision scalar
OpenFOAM can now be compiled with single, double or long double scalars by
setting the WM_PRECISION_OPTION environment variable to either SP, DP or LP
respectively.

On most 64bit systems long double is stored as 128bit but computed in the
floating point hardware to 80bit.  Due to the increased storage compared to
double precision cache and memory access is significantly more time consuming
causing a slow-down of floating point intensive operations by a factor of 2 to
3.
2018-01-29 15:03:13 +00:00
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