Due to my own misunderstanding of messages for CRAN maintainers, the
previous version of release 0.1-8 was cancelled. In the meantime, I
added the unit tests.

The prototypes of auxiliary epxint functions are defined directly in
expint.c instead of in the header file expint.h.

From B.D. Ripley 2022-03-26:

NEWS for 4.2.0 alpha (and R-devel for months before) has

   • The legacy S-compatibility macros DOUBLE_* in R_ext/Constants.h
     (included by R.h) are deprecated.

and these packages use them. The plan is to remove them in R-devel
soon after the release of 4.2.0, so please do so in your package
before Apr 23.

The standard C99 constants are those used in that header:

#define DOUBLE_DIGITS  DBL_MANT_DIG
#define DOUBLE_EPS     DBL_EPSILON
#define DOUBLE_XMAX    DBL_MAX
#define DOUBLE_XMIN    DBL_MIN

defined in <float.h> or for C++, <cfloat>, so please change to those.

Unfortunately there is no portable way to give a deprecation warning
in a header so once these are removed your package will fail to
install.

Package moved from GitHub to GitLab.

See commit #d797da of actuar for details.