Mail Archives: djgpp-workers/2000/05/16/06:46:35
On Mon, 15 May 2000, Eric Rudd wrote:
> Nor can I. The decisive argument for me was my inability to
> conceive of any test of "double" trig functions that used only
> "double" arithmetic, yet managed to reveal such range-reduction
> errors.
Perhaps some multiple-precision package could help. Using it, you
could create test cases, like djtst does in the Cygnus test suite part
by using Steven Mishier's quad-precision functions, and then run the
long double functions on those test cases. MP code is slow, but since
you only generate the test cases once, this should not be a problem.
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