Function SCIPisConsCompressionEnabled 

pub unsafe extern "C" fn SCIPisConsCompressionEnabled(
    scip: *mut SCIP,
) -> c_uint

is constraint compression enabled?

If constraint compression is enabled, fixed variables can be treated as constants by all constraints that are copied after calling this method.

@return TRUE if problem constraint compression is enabled, otherwise FALSE

@pre This method can be called if scip is in one of the following stages: - \ref SCIP_STAGE_PROBLEM - \ref SCIP_STAGE_TRANSFORMING - \ref SCIP_STAGE_TRANSFORMED - \ref SCIP_STAGE_INITPRESOLVE - \ref SCIP_STAGE_PRESOLVING - \ref SCIP_STAGE_EXITPRESOLVE - \ref SCIP_STAGE_PRESOLVED - \ref SCIP_STAGE_INITSOLVE - \ref SCIP_STAGE_SOLVING - \ref SCIP_STAGE_SOLVED - \ref SCIP_STAGE_EXITSOLVE - \ref SCIP_STAGE_FREETRANS

See \ref SCIP_Stage “SCIP_STAGE” for a complete list of all possible solving stages.