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version 1.1, 2000/09/09 14:12:19 version 1.1.1.2, 2003/08/25 16:06:05
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   This file is part of the MPFR Library.
   
                         THE MPFR LIBRARY  The MPFR Library is free software; you can redistribute it and/or modify it
   under the terms of the GNU Lesser General Public License (either version 2.1
   of the License, or, at your option, any later version) and the GNU General
   Public License as published by the Free Software Foundation (most of MPFR is
   under the former, some under the latter).
   
      ***** EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL *****  The MPFR Library is distributed in the hope that it will be useful, but
      ***** EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL *****  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      ***** EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL *****  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
   License for more details.
   
 This is a new function class, 'mpfr', for accurate floating-point arithmetic  You should have received a copy of the GNU Lesser General Public License
 with rounding control. Unlike the 'mpf' function class, 'mpfr' is a smooth  along with the MPFR Library; see the file COPYING.LIB.  If not, write to
 extension to the IEEE P754 arithmetic. In fact, setting the precision to 53,  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 'mpfr' functions should work exactly like IEEE doubles.  02111-1307, USA.
   
 This code is *experimental* and it is not fully integrated into GMP. It is  
 also not as well tested as the other parts of GMP. The original 'mpfr' library  
 integrated into GMP was version 0.4.  
   
 This code might at some point replace the 'mpf' library.  The MPFR distribution contains the following files:
   
   AUTHORS     - the authors of the library
   BUGS        - bugs in MPFR - please read this file!
                         MORE INFORMATION  COPYING     - the GNU General Public License, version 2
   COPYING.LIB - the Gnu Lesser General Public License, version 2.1
 This code was contributed by the French FIABLE project. Please see the 'mpfr'  ChangeLog   - the log of changes
 project page for more info, http://www.loria.fr/projets/mpfr/  INSTALL     - how to install MPFR (see also mpfr.texi)
   Makefile*   - files for building the library
   NEWS        - new features with respect to previous versions
   README      - this file
                           INSTALLATION  TODO        - what remains to do (any help is welcome!)
   VERSION     - version of MPFR (next release version if taken from CVS)
 To install this package to the libgmp library you add the "--enable-mpfr" to  ac*.m4      - automatic configuration files
 configure. This has the unfortune side effect that all programs using GMP  *.c         - source files
 will also depend on 'libm'.  configure*  - configuration files
   install*    - installation files
 Two test cases were disabled, 'tcmp' 'tset_d'.  missing     - auxiliary installation file
   mkinst*     - auxiliary installation file
   mpf2mpfr.h  - header file for compatibility with MPF
   mpfr.h      - external header file for MPFR
                          REPORTING BUGS  mpfr-impl.h - internal header file for MPFR
   mpfr-math.h - another internal header file for MPFR
 Report bugs to bug-gmp@gnu.org and mpfr@loria.fr.  What information is  mpfr-test.h - header file for test files
 needed in a good bug report is described in the manual.  The same address  mpfr.info   - info file for MPFR
 can be used for suggesting modifications and enhancements.  mpfr.texi   - texinfo documentation for MPFR
   tests/      - test directory
   texinfo.tex - TeX macros to handle mpfr.texi
   
                 NOTES FROM THE ORIGINAL INSTALL DOCUMENT  
   
 We tested the installation with GMP 2.0.2 on the following architectures:  
   
     Pentium II and III/Linux 2.2.10  
     Alpha 21264/OSF1 V4.0  
     SGI R10000/IRIX 6.5 (both using 32- and 64-bit limbs)  
     Sun UltraSparc/Solaris 2.6  
     HP 9000/HP-UX A.09.05  
     Pentium/Windows with Cygnus compiler  
   
 Known problems.  
 ===============  
   
 1) On some architectures (for example Alpha/OSF), the default 'make' command  
    crashes in step 3. GNU make is preferred.  
   
 2) Under HP-UX and Pentium/Linux, don't use the -pedantic option, otherwise  
    gcc complains with the longlong.h file from GMP.  
   
 3) On the Alpha, the test file for the square root (tsqrt) may produce  
    errors as follows:  
   
      libm.a differs from mpfr_sqrt for a=9.89438396044940260000e-134, rnd_mode=2  
      libm.a gives 3.14553397063986620000e-67, mpfr_sqrt gives 3.14553397063986680000e-67 (1 ulp)  
      libm.a differs from mpfr_sqrt for a=7.86528588050363750000e+31, rnd_mode=1  
      libm.a gives 8.86864469944739500000e+15, mpfr_sqrt gives 8.86864469944739400000e+15 (-1 ulp)  
   
    Also, Linux on Alpha is known to have problems with IEEE conformance. See  
    http://www.linux.org.uk/VERSION/relnotes.2211.html.  
   
    In most cases, as above, the error comes from the libm.a. On Alpha/Linux,  
    which is known to have a bad libm.a, you may even find errors in the  
    addition or multiplication.  
   
   
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