Date: Fri, 9 Jul 2004 00:30:00 -0700 From: Kris Kennaway <kris@obsecurity.org> To: David Schultz <das@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/lib/msun Makefile src/lib/msun/src math.h s_isfinite.c s_isnormal.c src/lib/libc/alpha/gen Makefile.inc isinf.c src/lib/libc/amd64/gen Makefile.inc isinf.c src/lib/libc/arm/gen Makefile.inc isinf.c src/lib/libc/i386/gen ... Message-ID: <20040709073000.GA10132@xor.obsecurity.org> In-Reply-To: <200407090332.i693WenK038766@repoman.freebsd.org> References: <200407090332.i693WenK038766@repoman.freebsd.org>
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--wRRV7LY7NUeQGEoC Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jul 09, 2004 at 03:32:40AM +0000, David Schultz wrote: > Log: > Implement the classification macros isfinite(), isinf(), isnan(), and > isnormal() the hard way, rather than relying on fpclassify(). This is > a lose in the sense that we need a total of 12 functions, but it is > necessary for binary compatibility because we have never bumped libm's > major version number. In particular, isinf(), isnan(), and isnanf() > were BSD libc functions before they were C99 macros, so we can't > reimplement them in terms of fpclassify() without adding a dependency > on libc.so.5. I have tried to arrange things so that programs that > could be compiled in FreeBSD 4.X will generate the same external > references when compiled in 5.X. At the same time, the new macros > should remain C99-compliant. > =20 > The isinf() and isnan() functions remain in libc for historical > reasons; however, I have moved the functions that implement the macros > isfinite() and isnormal() to libm where they belong. Moreover, > half a dozen MD versions of isinf() and isnan() have been replaced > with MI versions that work equally well. > =20 > Prodded by: kris Thanks very much! I'll roll a new world and test this on the package cluster. Kris --wRRV7LY7NUeQGEoC Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFA7kl4Wry0BWjoQKURAjcLAKCwhmQBg7IFJ6ecCFdgRU2qefWujgCfa2nT SRcEhmnHlH2g2AeCG8WKGMM= =/OT7 -----END PGP SIGNATURE----- --wRRV7LY7NUeQGEoC--
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