From owner-freebsd-sparc64@FreeBSD.ORG Tue Mar 30 19:10:19 2010 Return-Path: Delivered-To: freebsd-sparc64@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A2DB310656AA for ; Tue, 30 Mar 2010 19:10:19 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 926F28FC1E for ; Tue, 30 Mar 2010 19:10:19 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o2UJAJfi051585 for ; Tue, 30 Mar 2010 19:10:19 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o2UJAJSi051579; Tue, 30 Mar 2010 19:10:19 GMT (envelope-from gnats) Date: Tue, 30 Mar 2010 19:10:19 GMT Message-Id: <201003301910.o2UJAJSi051579@freefall.freebsd.org> To: freebsd-sparc64@FreeBSD.org From: dfilter@FreeBSD.ORG (dfilter service) Cc: Subject: Re: sparc64/144900: commit references a PR X-BeenThere: freebsd-sparc64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: dfilter service List-Id: Porting FreeBSD to the Sparc List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Mar 2010 19:10:19 -0000 The following reply was made to PR sparc64/144900; it has been noted by GNATS. From: dfilter@FreeBSD.ORG (dfilter service) To: bug-followup@FreeBSD.org Cc: Subject: Re: sparc64/144900: commit references a PR Date: Tue, 30 Mar 2010 19:06:40 +0000 (UTC) Author: marius Date: Tue Mar 30 19:06:31 2010 New Revision: 205896 URL: http://svn.freebsd.org/changeset/base/205896 Log: MFC: r205396 Division should take both arguments' signs into account when the the dividend is infinity or zero and the divisor is not the same. PR: 144900 Submitted by: Peter Jeremy Modified: stable/8/lib/libc/sparc64/fpu/fpu_div.c Directory Properties: stable/8/lib/libc/ (props changed) stable/8/lib/libc/stdtime/ (props changed) Modified: stable/8/lib/libc/sparc64/fpu/fpu_div.c ============================================================================== --- stable/8/lib/libc/sparc64/fpu/fpu_div.c Tue Mar 30 19:05:20 2010 (r205895) +++ stable/8/lib/libc/sparc64/fpu/fpu_div.c Tue Mar 30 19:06:31 2010 (r205896) @@ -167,14 +167,16 @@ __fpu_div(fe) * return it. Otherwise we have the following cases: * * Inf / Inf = NaN, plus NV exception - * Inf / num = Inf [i.e., return x] - * Inf / 0 = Inf [i.e., return x] - * 0 / Inf = 0 [i.e., return x] - * 0 / num = 0 [i.e., return x] + * Inf / num = Inf [i.e., return x #] + * Inf / 0 = Inf [i.e., return x #] + * 0 / Inf = 0 [i.e., return x #] + * 0 / num = 0 [i.e., return x #] * 0 / 0 = NaN, plus NV exception - * num / Inf = 0 + * num / Inf = 0 # * num / num = num (do the divide) - * num / 0 = Inf, plus DZ exception + * num / 0 = Inf #, plus DZ exception + * + * # Sign of result is XOR of operand signs. */ if (ISNAN(x) || ISNAN(y)) { ORDER(x, y); @@ -183,10 +185,10 @@ __fpu_div(fe) if (ISINF(x) || ISZERO(x)) { if (x->fp_class == y->fp_class) return (__fpu_newnan(fe)); + x->fp_sign ^= y->fp_sign; return (x); } - /* all results at this point use XOR of operand signs */ x->fp_sign ^= y->fp_sign; if (ISINF(y)) { x->fp_class = FPC_ZERO; _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org"