Article View: comp.lang.fortran
Article #6463Functions to modify IEEE floating point?
From: David E. Bernholdt
Date: Mon, 05 Mar 1990 19:34
Date: Mon, 05 Mar 1990 19:34
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1468 bytes
I use Sun systems, which follows the ANSI/IEEE 754-1985 standard for floating point arithmetic. Sun provides a number of functions to manipulate the actions of the system. For example, the Fortran functions ieee_flags ieee_handler sigfpe and the include file <f77/f77_floatingpoint.h> They also provide things like gradual_underflow() abrupt_underflow() which can turn on or off the standard IEEE handling of underflows in order to save comuptation time, and ieee_retrospective which can be called anywhere to provide a summary of the IEEE exceptions which have occurred so far. Are these routines available on all machines which follow IEEE floating point? Do they have the same names or just similar functionality? Unfortunately, I don't have access to any other IEEE machines to look at. Any help is appreciated. -- David Bernholdt bernhold@qtp.ufl.edu Quantum Theory Project bernhold@ufpine.bitnet University of Florida Gainesville, FL 32611 904/392 6365
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!uflorida!ufqtp!bernholdShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!uflorida!ufqtp!bernhold From: bernhold@qtp.ufl.edu (David E. Bernholdt) Newsgroups: comp.lang.fortran,sci.math.num-analysis Subject: Functions to modify IEEE floating point? Message-ID: <938@orange19.qtp.ufl.edu> Date: 5 Mar 90 19:34:55 GMT Reply-To: bernhold@qtp.ufl.edu (David E. Bernholdt) Organization: University of Florida Quantum Theory Project Lines: 28