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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: <14964@smoke.brl.mil>
Date: 24 Jan 91 03:42:36 GMT
References: <1991Jan22.180927.29232@zoo.toronto.edu> <14938@smoke.brl.mil> <16035@crdgw1.crd.ge.com>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 12

In article <16035@crdgw1.crd.ge.com> volpe@camelback.crd.ge.com (Christopher R Volpe) writes:
-In article <14938@smoke.brl.mil>, gwyn@smoke.brl.mil (Doug Gwyn) writes:
-|>standard does NOT require that the values of the <float.h> macros be
-|>CONSTANT expressions; ...
-2.2.4.2.2:
-  Of the values in the <float.h> header, FLT_RADIX shall be a constant
-expression suitable for use in #if preprocessing directives; all other
-values need not be constant expressions.            

Oops, I missed that; thanks for the correction.  FLT_RADIX then is okay
for use in #if expressions, but the other <float.h> macros aren't, not
even FLT_ROUNDS.