gbTrace -- provide tracing output during various computations in the engine.

gbTrace -- provide tracing output during various computations in the engine.

gbTrace n -- set the tracing level for the engine to level n. Meaningful values for the user n are 0, 1, 2, and 3.

The notations used in tracing are :

g - a generator reduced to something nonzero and has been added to the basis.

m - an S-pair reduced to something nonzero and has been added to the basis.

z - an S-pair reduced to zero, and a syzygy has been recorded.

u - an S-pair reduced to zero, but the syzygy need not be recorded.

o - an S-pair or generator reduced to zero, but no new syzygy occurred.

r - an S-pair has been removed.

{2} - beginning to reduce the S-pairs of multi-degree {2}.

(7) - 7 more S-pairs among basis elements need to be reduced.

(8,9) - there are 8 S-pairs to do in this degree, and 9 more in higher degrees.

. - a minor has been computed, or something has happened while computing a resolution.

The value returned is the old tracing level.

Code:

     -- ../../../Macaulay2/m2/gb.m2:10-14
     gbTrace = (n) -> (
          if class n === ZZ then (
               sendgg(ggINT, gg n, ggtracing);
               eePopInt())
          else error "expected an integer" )