Documentation on MPFR-2.0.1
MPFR in two pages
The reference manual [dvi,
A presentation at the
workshop organized by David Hough
The function mpfr_cmp_si(b,i) returns an incorrect result
when b=0 and i is negative.
Apply the following patch to fix that.
On some machines, the tget_d test fails:
Wrong result for -17 * 2^(-1079), rnd_mode 0
got -0.00000000000000000000e+00 instead of -4.94065645841246540000e-324
This is a bug in gcc, which makes the mpfr_get_d function fail for
subnormal numbers. Apply the following patch to fix that.
The function mpfr_pow loops for exact results like 4.0 power
0.5, or does not deal correctly with overflows.
Apply the following patch to fix that
The function mpfr_set_q produces an error when the numerator or
denominator is one. Apply the following patch.
If you want to compile mpfr-2.0.1 with gmp-4.1, you will have a problem
since the GMP developers changed the name of the macro
MP_LIMB_T_HIGHBIT. Apply the following patch
to the file mpfr-impl.h.
The function mpfr_set_str doesn't accept uppercase letters as
mpf_set_str does. Apply the following patch
to the file set_str.c.
The function mpfr_sub sometimes return a wrong inexact flag
for arguments of opposite sign. The computed result is correct: this
only affect the inexact flag. Patch.
The function mpfr_urandomb sometimes produces a Segmentation
The function mpfr_exp may return a wrong result for large
The function mpfr_agm produces a division by zero exception
when its arguments are too close. Patch.
The function mpfr_out fails when its first argument is NULL.