Major Section: EVENTS
Examples: (set-measure-function nqthm::count)Note: This is an event! It does not print the usual event summary but nevertheless changes the ACL2 logical world and is so recorded.
General Form: (set-measure-function name)where
name
is a function symbol of one argument. This macro is
equivalent to (table acl2-defaults-table :measure-function 'name)
,
which is also an event (see table), but no output results from
a set-measure-function
event.
This event sets the default measure function to name
. Subsequently,
if a recursively defined function is submitted to defun
with no
explicitly given :measure
argument, defun
``guesses'' the measure
(name var)
, where name
is the then current default measure function
and var
is the first formal found to be tested along every branch
and changed in every recursive call.