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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: Here's a challenge for floating point lovers.
Message-ID: <14993@smoke.brl.mil>
Date: 27 Jan 91 00:29:25 GMT
References: <14964@smoke.brl.mil> <101@tdatirv.UUCP> <2855@charon.cwi.nl>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 10

In article <2855@charon.cwi.nl> dik@cwi.nl (Dik T. Winter) writes:
>In article <101@tdatirv.UUCP> sarima@tdatirv.UUCP (Stanley Friesen) writes:
> > #define FLT_ROUNDS (__flt_rounds)
>And right they are because it can change at runtime.

However, the C standard does not contemplate rounding mode changing
during execution of a strictly conforming program.  That stuff is
an IEEE floating-point extension that need not be supported by a
conforming implementation.  (I'm trying to resist my usual slam at
IEEE floating point.)