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Liam M. Healy authored
If equal-dimension is called with errorp=T and two grids that do not have the same dimension and at least one had non-scalar-dimension, signal an error. Previously, this would just return NIL NIL even though errorp is T. References [[id:a456e075-1746-454d-b68c-ad6fa21fb293][Zero in matrix-from-columns can't be added]] [[id:39fe9321-7260-4335-bb3e-735ba1d00e43][Alternative approach to mixed/scalar pq-grid]]