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__DBL_HAS_DENORM__ et al required in recent libstdc++
- From: Tim Prince <timothyprince at sbcglobal dot net>
- To: gcc-help <gcc-help at gcc dot gnu dot org>
- Date: Mon, 27 Nov 2006 06:26:57 -0800
- Subject: __DBL_HAS_DENORM__ et al required in recent libstdc++
- Reply-to: tprince at myrealbox dot com
Builds of gcc-4.3 libstdc++ on cygwin have begun failing with these
undefined symbols for FLT,DBL,LDBL in std_limits.h. I don't find any
explanation of it. Is it a particular problem for cygwin, given that
the include files for LDBL are incomplete, and don't distinguish between
DBL and LDBL? Are these values intended to reflect options such as
-ffast-math and -mfpmath which would affect use of subnormals (formerly
called denorm)?