From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/14997 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: "Stefan Kanthak" Newsgroups: gmane.linux.lib.musl.general Subject: [PATCH] fmax(), fmaxf(), fmaxl(), fmin(), fminf(), fminl() simplified Date: Wed, 11 Dec 2019 10:55:29 +0100 Organization: Me, myself & IT Message-ID: <557979287957451E9255CCBC4CD7CBE5@H270> Reply-To: musl@lists.openwall.com Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="144282"; mail-complaints-to="usenet@blaine.gmane.org" To: Original-X-From: musl-return-15013-gllmg-musl=m.gmane.org@lists.openwall.com Wed Dec 11 10:58:51 2019 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by blaine.gmane.org with smtp (Exim 4.89) (envelope-from ) id 1ieylc-000bLU-F4 for gllmg-musl@m.gmane.org; Wed, 11 Dec 2019 10:58:48 +0100 Original-Received: (qmail 5472 invoked by uid 550); 11 Dec 2019 09:58:42 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Original-Received: (qmail 5370 invoked from network); 11 Dec 2019 09:58:41 -0000 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.24158 X-VADE-STATUS: LEGIT Xref: news.gmane.org gmane.linux.lib.musl.general:14997 Archived-At: Still more optimisations/simplifications in the math subtree. JFTR: I'm NOT subscribed to your mailing list, so CC: me in replies! --- -/src/math/fmax.c +++ +/src/math/fmax.c @@ -3,11 +3,9 @@ double fmax(double x, double y) { - if (isnan(x)) + if (x != x) return y; - if (isnan(y)) - return x; /* handle signed zeros, see C99 Annex F.9.9.2 */ - if (signbit(x) != signbit(y)) + if (x == y) return signbit(x) ? y : x; return x < y ? y : x; } --- -/src/math/fmaxf.c +++ +/src/math/fmaxf.c @@ -3,11 +3,9 @@ float fmaxf(float x, float y) { - if (isnan(x)) + if (x != x) return y; - if (isnan(y)) - return x; /* handle signed zeros, see C99 Annex F.9.9.2 */ - if (signbit(x) != signbit(y)) + if (x == y) return signbit(x) ? y : x; return x < y ? y : x; } --- -/src/math/fmaxl.c +++ +/src/math/fmaxl.c @@ -10,11 +10,9 @@ long double fmaxl(long double x, long double y) { - if (isnan(x)) + if (x != x) return y; - if (isnan(y)) - return x; /* handle signed zeros, see C99 Annex F.9.9.2 */ - if (signbit(x) != signbit(y)) + if (x == y) return signbit(x) ? y : x; return x < y ? y : x; } --- -/src/math/fmin.c +++ +/src/math/fmin.c @@ -3,11 +3,9 @@ double fmin(double x, double y) { - if (isnan(x)) + if (x != x) return y; - if (isnan(y)) - return x; /* handle signed zeros, see C99 Annex F.9.9.2 */ - if (signbit(x) != signbit(y)) + if (x == y) return signbit(x) ? x : y; - return x < y ? x : y; + return x > y ? y : x; } --- -/src/math/fminf.c +++ +/src/math/fminf.c @@ -3,11 +3,9 @@ float fminf(float x, float y) { - if (isnan(x)) + if (x != x) return y; - if (isnan(y)) - return x; /* handle signed zeros, see C99 Annex F.9.9.2 */ - if (signbit(x) != signbit(y)) + if (x == y) return signbit(x) ? x : y; - return x < y ? x : y; + return x > y ? y : x; } --- -/src/math/fminl.c +++ +/src/math/fminl.c @@ -10,11 +10,9 @@ long double fminl(long double x, long double y) { - if (isnan(x)) + if (x != x) return y; - if (isnan(y)) - return x; /* handle signed zeros, see C99 Annex F.9.9.2 */ - if (signbit(x) != signbit(y)) + if (x == y) return signbit(x) ? x : y; - return x < y ? x : y; + return x > y ? y : x; }