Date: Fri, 28 Jul 2000 00:12:16 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Mark Abene <phiber@radicalmedia.com> Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: floating point troubles... Message-ID: <14721.506.302306.465457@grasshopper.cs.duke.edu> In-Reply-To: <20000708052236.D22774@radicalmedia.com> References: <20000708040526.C22774@radicalmedia.com> <Pine.BSF.4.21.0007080941070.66274-100000@salmon.nlsystems.com> <20000708052236.D22774@radicalmedia.com>
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The problem is that libm is not being built with -mieee
Try the patch below & rebuild your libm.
Index: lib/msun/Makefile
===================================================================
RCS file: /home/ncvs/src/lib/msun/Makefile,v
retrieving revision 1.23
diff -u -r1.23 Makefile
--- lib/msun/Makefile 1999/08/28 00:06:05 1.23
+++ lib/msun/Makefile 2000/07/28 03:57:21
@@ -45,11 +45,7 @@
.PATH: ${.CURDIR)/alpha
ARCH= alpha
ARCH_SRCS = s_copysign.S s_copysignf.S
-# XXX Comment from NetBSD/Alpha:
-# XXX LINT SIGFPEs in e_exp.c's strtod(). FP underflow/denorm software
-# handling is broken (doesn't exist!) on the Alpha port.
-# Stock gcc 2.7.2.1 doesn't understand these options.
-#CFLAGS += -mtrap-precision=i -mfp-trap-mode=su
+CFLAGS += -mtrap-precision=i -mfp-trap-mode=su
.elif ${MACHINE_ARCH} == "i386"
ARCH= i387
ARCH_PREFIX= ${ARCH}_
Even though it will produce slower code, I think we should be using
this by default. Opinions?
Drew
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