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Annotation of OpenXM_contrib/gmp/mpfr/README, Revision 1.1

1.1     ! maekawa     1:
        !             2:                         THE MPFR LIBRARY
        !             3:
        !             4:      ***** EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL *****
        !             5:      ***** EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL *****
        !             6:      ***** EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL *****
        !             7:
        !             8: This is a new function class, 'mpfr', for accurate floating-point arithmetic
        !             9: with rounding control. Unlike the 'mpf' function class, 'mpfr' is a smooth
        !            10: extension to the IEEE P754 arithmetic. In fact, setting the precision to 53,
        !            11: 'mpfr' functions should work exactly like IEEE doubles.
        !            12:
        !            13: This code is *experimental* and it is not fully integrated into GMP. It is
        !            14: also not as well tested as the other parts of GMP. The original 'mpfr' library
        !            15: integrated into GMP was version 0.4.
        !            16:
        !            17: This code might at some point replace the 'mpf' library.
        !            18:
        !            19:
        !            20:
        !            21:                         MORE INFORMATION
        !            22:
        !            23: This code was contributed by the French FIABLE project. Please see the 'mpfr'
        !            24: project page for more info, http://www.loria.fr/projets/mpfr/
        !            25:
        !            26:
        !            27:
        !            28:                           INSTALLATION
        !            29:
        !            30: To install this package to the libgmp library you add the "--enable-mpfr" to
        !            31: configure. This has the unfortune side effect that all programs using GMP
        !            32: will also depend on 'libm'.
        !            33:
        !            34: Two test cases were disabled, 'tcmp' 'tset_d'.
        !            35:
        !            36:
        !            37:
        !            38:                         REPORTING BUGS
        !            39:
        !            40: Report bugs to bug-gmp@gnu.org and mpfr@loria.fr.  What information is
        !            41: needed in a good bug report is described in the manual.  The same address
        !            42: can be used for suggesting modifications and enhancements.
        !            43:
        !            44:
        !            45:
        !            46:                 NOTES FROM THE ORIGINAL INSTALL DOCUMENT
        !            47:
        !            48: We tested the installation with GMP 2.0.2 on the following architectures:
        !            49:
        !            50:     Pentium II and III/Linux 2.2.10
        !            51:     Alpha 21264/OSF1 V4.0
        !            52:     SGI R10000/IRIX 6.5 (both using 32- and 64-bit limbs)
        !            53:     Sun UltraSparc/Solaris 2.6
        !            54:     HP 9000/HP-UX A.09.05
        !            55:     Pentium/Windows with Cygnus compiler
        !            56:
        !            57: Known problems.
        !            58: ===============
        !            59:
        !            60: 1) On some architectures (for example Alpha/OSF), the default 'make' command
        !            61:    crashes in step 3. GNU make is preferred.
        !            62:
        !            63: 2) Under HP-UX and Pentium/Linux, don't use the -pedantic option, otherwise
        !            64:    gcc complains with the longlong.h file from GMP.
        !            65:
        !            66: 3) On the Alpha, the test file for the square root (tsqrt) may produce
        !            67:    errors as follows:
        !            68:
        !            69:      libm.a differs from mpfr_sqrt for a=9.89438396044940260000e-134, rnd_mode=2
        !            70:      libm.a gives 3.14553397063986620000e-67, mpfr_sqrt gives 3.14553397063986680000e-67 (1 ulp)
        !            71:      libm.a differs from mpfr_sqrt for a=7.86528588050363750000e+31, rnd_mode=1
        !            72:      libm.a gives 8.86864469944739500000e+15, mpfr_sqrt gives 8.86864469944739400000e+15 (-1 ulp)
        !            73:
        !            74:    Also, Linux on Alpha is known to have problems with IEEE conformance. See
        !            75:    http://www.linux.org.uk/VERSION/relnotes.2211.html.
        !            76:
        !            77:    In most cases, as above, the error comes from the libm.a. On Alpha/Linux,
        !            78:    which is known to have a bad libm.a, you may even find errors in the
        !            79:    addition or multiplication.
        !            80:
        !            81: