with-timeout (timeout) declaration* forms* => results
Arguments and values:
timeout -> a non-negative real number.
declaration -> a declare expression; not evaluated.
forms -> an implicit progn.
results -> the values returned by the forms.
forms and signal a condition of type
timeout if the execution of
forms does not
On implementations which do not support with-timeout natively and don’t support threads either it signals a condition of type not-implemented.