git clone ''

(ql:quickload :codata-recommended-values)

CODATA recommended values of physical constants.


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.


 (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'.