CODATA recommended values of physical constants.

codata-recommended-values

* CODATA Recommended Values

CODATA recommended values of physical constants.

See ‹https://physics.nist.gov/cuu/Constants/index.html›.

All CODATA recommended values are defined as a constant and as a
function.  The function returns three values, the value of the
constant, the standard uncertainty, and the relative standard
uncertainty.  Floating-point numbers are of the type ‘long-float’.
Please note that some of the constants have values which can not be
represented as IEEE 754 single precision floating-point numbers.

Usage:

#+BEGIN_SRC lisp
(ql:quickload :codata-recommended-values)

(defun E (m)
  (symbol-macrolet ((c codata-recommended-values:speed-of-light-in-vacuum))
    (* m c c)))
#+END_SRC

The latest values are available via the ‘codata-recommended-values’
package.  If you need a previously issued value, append the year to
the package name, for example, ‘codata-recommended-values-2010’.
There are packages for the years 2022, 2018, 2014, and 2010.


** Unit Tests

The test procedure requires two definitions from my ‘[[https://github.com/ralph-schleicher/rs-cll][rs-cll]]’ library
which is not available in Quicklisp.  However, you can execute the
unit tests by calling

#+BEGIN_SRC lisp
(asdf:test-system "codata-recommended-values")
#+END_SRC

The expected output is listed below.

#+BEGIN_EXAMPLE
CODATA-2010: 335 assertions passed, 0 failed.

CODATA-2014: 335 assertions passed, 0 failed.

CODATA-2018: 354 assertions passed, 0 failed.

CODATA-2022: 355 assertions passed, 0 failed.

STRING-VALUES: 1379 assertions passed, 0 failed.

Unit Test Summary
 | 2758 assertions total
 | 2758 passed
 | 0 failed
 | 0 execution errors
 | 0 missing tests
#+END_EXAMPLE


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