def _factorize(self, cluster, *args, **kwargs):
"""
Collect terms in each expr in exprs based on the following heuristic:
* Collect all literals;
* Collect all temporaries produced by CSE;
* If the expression has an operation count higher than
self.threshold, then this is applied recursively until
no more factorization opportunities are available.
"""
processed = []
for expr in cluster.exprs:
handle = collect_nested(expr)
cost_handle = estimate_cost(handle)
if cost_handle >= self.thresholds['min-cost-factorize']:
handle_prev = handle
cost_prev = estimate_cost(expr)
while cost_handle < cost_prev:
handle_prev, handle = handle, collect_nested(handle)
cost_prev, cost_handle = cost_handle, estimate_cost(handle)
cost_handle, handle = cost_prev, handle_prev
processed.append(handle)
return cluster.rebuild(processed)
def _factorize(self, cluster, *args, **kwargs):
"""
Factorize trascendental functions, symbolic powers, numeric coefficients.
If the expression has an operation count greater than
``self.MIN_COST_FACTORIZE``, then the algorithm is applied recursively
until no more factorization opportunities are detected.
"""
processed = []
for expr in cluster.exprs:
handle = collect_nested(expr)
cost_handle = estimate_cost(handle)
if cost_handle >= self.MIN_COST_FACTORIZE:
handle_prev = handle
cost_prev = estimate_cost(expr)
while cost_handle < cost_prev:
handle_prev, handle = handle, collect_nested(handle)
cost_prev, cost_handle = cost_handle, estimate_cost(handle)
cost_handle, handle = cost_prev, handle_prev
processed.append(handle)
return cluster.rebuild(processed)
def _factorize(self, cluster, *args, **kwargs):
"""
Collect terms in each expr in exprs based on the following heuristic:
* Collect all literals;
* Collect all temporaries produced by CSE;
* If the expression has an operation count higher than
``self.MIN_COST_FACTORIZE``, then this is applied recursively until
no more factorization opportunities are available.
"""
processed = []
for expr in cluster.exprs:
handle = collect_nested(expr)
cost_handle = estimate_cost(handle)
if cost_handle >= self.MIN_COST_FACTORIZE:
handle_prev = handle
cost_prev = estimate_cost(expr)
while cost_handle < cost_prev:
handle_prev, handle = handle, collect_nested(handle)
cost_prev, cost_handle = cost_handle, estimate_cost(handle)
cost_handle, handle = cost_prev, handle_prev
processed.append(handle)
return cluster.rebuild(processed)
