Documentation for sub is-approx-calculate assembled from the following types:

module Test

From Test

(Test) sub is-approx-calculate

Defined as:

sub is-approx-calculate ($got,$expected,$abs-tol where { !.defined or $_ >= 0 },$rel-tol where { !.defined or $_ >= 0 },$desc)

This is the actual routine called by is-approx when absolute and relative tolerance are specified. They are tested independently, and the test succeeds only if both pass.