toms385

toms385, a FORTRAN77 code which implements ACM toms algorithm 385, for evaluating the exponential integral Ei(x).

The text of many ACM toms algorithms is available online through ACM: http://www.acm.org/pubs/calgo or NETLIB: http://www.netlib.org/toms/index.html.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

toms385 is available in a FORTRAN77 version.

Related Data and Programs:

toms385_test

test_values, a FORTRAN77 library which supplies test values of various mathematical functions.

Reference:

1. Kathleen Paciorek,
   Algorithm 385: Exponential Integral Ei(x),
   Communications of the ACM,
   Volume 13, Number 7, July 1970, pages 446-447.

Source Code:

• toms385.f, the source code.
• toms385.sh, commands to compile the source code.