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:
(ql:quickload :codata-recommended-values)
(defun E (m)
(symbol-macrolet ((c codata-recommended-values:speed-of-light-in-vacuum))
(* m c c)))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.
The test procedure requires two definitions from my ‘rs-cll’ library which is not available in Quicklisp. However, you can execute the unit tests by calling
(asdf:test-system "codata-recommended-values")The expected output is listed below.
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