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From: clee@polyslo.CalPoly.EDU (Chang L. Lee)
Newsgroups: comp.binaries.ibm.pc.d
Subject: gnuplot-3d and IIT 2C87 can't coexist?
Summary: FP error when 2c87 enabled with gnuplot-3d
Keywords: gnuplot-3d, 2c87
Message-ID: <28330c18.660@petunia.CalPoly.EDU>
Date: 16 May 91 22:47:52 GMT
Organization: Cal Poly State Univ,CSC Dept,San Luis Obispo,CA 93407
Lines: 16



Has anyone come across a problem with the IIT 2C87 coprocessor and
gnuplot with 3D enhancements?  The system is compiled with Turbo C 2.0;
it crashes with a "Floating point error: Partial lost of precision"
when the 2C87 is enabled (either through the compile time switch -f87 or
the runtime switch set "87=Y".)  Unfortunately, the executable distributed
through simtel20, "gnuplot-3d", shows the same symptom.

I bought the 2C87 just a week ago.  It has dramatically speeded up all my
other floating point intensive applications and has otherwise shown no
incompatibilities.  So, I am inclined to believe that the problem lies
on the software side.  BTW, gnuplot 2.2 runs just fine.

Thanks in advance,
Robert