From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5221 invoked by alias); 13 Dec 2017 10:34:57 -0000 Mailing-List: contact newlib-cvs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: newlib-cvs-owner@sourceware.org Received: (qmail 5157 invoked by uid 9078); 13 Dec 2017 10:34:56 -0000 Date: Wed, 13 Dec 2017 10:34:00 -0000 Message-ID: <20171213103456.5155.qmail@sourceware.org> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Corinna Vinschen To: newlib-cvs@sourceware.org Subject: [newlib-cygwin] newlib: Don't do double divide in powf. X-Act-Checkin: newlib-cygwin X-Git-Author: Jim Wilson X-Git-Refname: refs/heads/master X-Git-Oldrev: c338bc22554fcddf64f12148785d07c1a4021160 X-Git-Newrev: c874f1145ff5d2fa461cef21d6f8d575138fcdbf X-SW-Source: 2017-q4/txt/msg00082.txt.bz2 https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=c874f1145ff5d2fa461cef21d6f8d575138fcdbf commit c874f1145ff5d2fa461cef21d6f8d575138fcdbf Author: Jim Wilson Date: Tue Dec 12 11:39:13 2017 -0800 newlib: Don't do double divide in powf. * Use 0.0f instead of 0.0 in divide. Diff: --- newlib/libm/math/wf_pow.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/newlib/libm/math/wf_pow.c b/newlib/libm/math/wf_pow.c index 9a10254..f753b52 100644 --- a/newlib/libm/math/wf_pow.c +++ b/newlib/libm/math/wf_pow.c @@ -108,7 +108,9 @@ if (_LIB_VERSION == _SVID_) exc.retval = 0.0; else - exc.retval = 0.0/0.0; /* X/Open allow NaN */ + /* Use a float divide, to avoid a soft-float double + divide call on single-float only targets. */ + exc.retval = (0.0f/0.0f); /* X/Open allow NaN */ if (_LIB_VERSION == _POSIX_) errno = EDOM; else if (!matherr(&exc)) {