The macro macro-check-index checks that the argument is a non-negative fixnum suitable to be used as an index. It is defined in _num#.scm by calling the define-check-index-range-macro macro : (define-check-index-range-macro index macro-index?) The macro define-check-index-range-macro is defined in _gambit#.scm Marc

On Feb 24, 2015, at 5:11 PM, Bradley Lucier <lucier@math.purdue.edu> wrote:

Marc:

Where is macro-check-index defined, and, more importantly, what does it do?

Brad