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Message-ID: <20120305110809.GE5728@port70.net>
Date: Mon, 5 Mar 2012 12:08:10 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: libm
* Szabolcs Nagy <nsz@...t70.net> [2012-03-04 15:50:41 +0100]:
> * Rich Felker <dalias@...ifal.cx> [2012-03-04 01:53:40 -0500]:
> > On Sat, Mar 03, 2012 at 11:57:58PM +0100, Szabolcs Nagy wrote:
> > > how to do the long double ifdefs?
> >
> > #if LDBL_MANT_DIG == ...
> >
> ok will do that
>
i use the following checks in all long double code now
LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
the inplace union declarations for bit hacks are not ok
anymore because endianness is not checked
the union declarations should go to an arch specific .h
eg. arch/i386/longdouble.h
but before that long double bit hacks may need some
cleanups (freebsd union vs openbsd macros vs ..)
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