<DIV>I'm happy to advise successful build and tests of MPFR 2.2.0 release candidate as shared library (DLL) on Windows XP, with MSys.</DIV> <DIV> </DIV> <DIV>Notes:</DIV> <DIV> </DIV> <DIV>1.  Win DLL building no longer requires manual gcc linkage step.  The configure script supports --disable-static --enable-shared and that works just like it does for GMP (hmmm, is this really new? Or has it been supported anyway - if so, forgive my being slow to discover it!)</DIV> <DIV> </DIV> <DIV>2.  For version 2.1.2, I had manually patched the mpfr_const_log2 and mpfr_const_pi functions to cache the results, otherwise functions like mpfr_log became distinctively sluggish at higher precisions (when the proportional cost of calculating log2 and pi on the fly reached and passed a critical level).  This has been fixed in 2.2.0, and even when re-evaluation of log2 does have to be done, I see that this calculation has also been greatly improved in the new version (by a factor of 3 to 4 on my system at 50,000 digits precision).</DIV> <DIV><BR>3.  On my system, the new mpfr_sin() runs 1.75 to 2 times faster than before, and although  that's still slower than a GMP (mpf) version that I have written, the gap has been reduced - I was 2 to 3 times faster before at 10,000 to 100,000 digits, but now I'm only 1.2 to 1.6 times faster.</DIV> <DIV> </DIV> <DIV>4.  mpfr_exp is more or less the same speed - I have an mpf version that runs 1.5 times faster, although this is in a narrower range (10,000 to 20,000) digits.  MPFR changes from a Taylor series to a Brent algorithm at this stage, and my mpf version (which always uses a Taylor-based method) runs at about the same speed at 50,000 digits, and starts to fall behind at 100,000 digits.</DIV> <DIV> </DIV> <DIV> </DIV> <DIV>Jim White</DIV> <DIV>14 Sep 2005</DIV> <DIV>Canberra</DIV> <DIV><BR><B><I>gmp-discuss-request@swox.com</I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <P>Today's Topics:<BR><BR>3. MPFR 2.2.0 Release Candidate (Vincent Lefevre)<BR></P> <P>Date: Tue, 13 Sep 2005 10:13:27 +0200<BR>From: Vincent Lefevre <VINCENT@VINC17.ORG><BR>Subject: MPFR 2.2.0 Release Candidate<BR>To: mpfr@loria.fr<BR>Cc: gmp-discuss@swox.com<BR><BR>The release of MPFR 2.2.0 is imminent. Please help to make this<BR>release as good as possible by downloading and testing the<BR>release candidate:<BR></P></BLOCKQUOTE>