From owner-cvs-src@FreeBSD.ORG Wed May 2 13:49:29 2007 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 34D2D16A407; Wed, 2 May 2007 13:49:29 +0000 (UTC) (envelope-from bde@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [69.147.83.41]) by mx1.freebsd.org (Postfix) with ESMTP id 286B513C459; Wed, 2 May 2007 13:49:29 +0000 (UTC) (envelope-from bde@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.13.8/8.13.8) with ESMTP id l42DnTrT016173; Wed, 2 May 2007 13:49:29 GMT (envelope-from bde@repoman.freebsd.org) Received: (from bde@localhost) by repoman.freebsd.org (8.13.8/8.13.8/Submit) id l42DnSRZ016172; Wed, 2 May 2007 13:49:28 GMT (envelope-from bde) Message-Id: <200705021349.l42DnSRZ016172@repoman.freebsd.org> From: Bruce Evans Date: Wed, 2 May 2007 13:49:28 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Cc: Subject: cvs commit: src/lib/msun/bsdsrc b_tgamma.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 May 2007 13:49:29 -0000 bde 2007-05-02 13:49:28 UTC FreeBSD src repository Modified files: lib/msun/bsdsrc b_tgamma.c Log: Document (in a comment) the current (slightly broken) handling of special values in more detail, and change the style of this comment to be closer to fdlibm and C99: - tgamma(-Inf) was undocumented and is wrong (+Inf, should be NaN) - tgamma(negative integer) is as intended (+Inf) but not best for IEEE-754 (NaN) - tgamma(-0) was documented as being wrong (+Inf) but was correct (-Inf) - documentation of setting of exceptions (overflow, etc.) was more complete here than in most of libm, but was further from matching the actual setting than in most of libm, due to various bugs here (primarily, always evaluating +Inf one/zero and getting unwanted divide-by-zero exceptions from this). Now the actual behaviour with gcc -O0 is documented. Optimization still breaks setting of exceptions all over libm, so nothing can depend on this working. - tgamma(NaN)'s exception was documented as being wrong (invalid) but was correct (no exception with IEEEish NaNs). Finish (?) rev.1.5. gamma was not renamed to tgamma in one place. Finish (?) rev.1.6. errno.h was not completely removed. Revision Changes Path 1.8 +9 -6 src/lib/msun/bsdsrc/b_tgamma.c