Changes from version 1.0 to version 2001
the default installation does not provide any more access to machine
rounding mode, and as a consequence does not compare MPFR results with
precision=53 to machine results. Add option -DTEST if you want to have
access to machine rounding mode, and to check MPFR results against.
the MPFR files do not need the header file math.h any more
the header file mpfr.h was split into mpfr.h for
exported functions and mpfr-impl.h for internal functions.
The user should not use functions or macros from mpfr-impl.h,
since those may change in further releases.
mpfr.h was modified in order to make easy a C++ interface
MPFR now deals with infinities (+infinity and -infinity) and NaN
the missing function mpfr_swap is now available
mpfr_zeta was removed (was incomplete)
mpfr_init and mpfr_init2 now initialize the corresponding variable to 0
(like in other initialization functions from GNU MP)
in case memory allocation fails, an error message is output
several bugs of version 1.0 were fixed