def _transformExpression(self, expr, instance):
if expr.polynomial_degree() > 2:
raise ValueError("Cannot transform polynomial terms with degree > 2")
if expr.polynomial_degree() < 2:
return expr
#
expr = self._replace_bilinear(expr, instance)
return expr
def evaluate(expr, seconds):
gc.collect()
_clear_expression_pool()
start = time.time()
#
expr_ = expr.clone()
#
stop = time.time()
seconds['clone'] = stop - start
gc.collect()
_clear_expression_pool()
start = time.time()
#
d_ = expr.polynomial_degree()
#
stop = time.time()
seconds['polynomial_degree'] = stop - start
if False:
gc.collect()
_clear_expression_pool()
start = time.time()
#
s_ = expr.to_string()
#
stop = time.time()
seconds['to_string'] = stop - start
gc.collect()
_clear_expression_pool()
start = time.time()
#
s_ = expr.is_constant()
#
stop = time.time()
seconds['is_constant'] = stop - start
gc.collect()
_clear_expression_pool()
start = time.time()
#
s_ = expr.is_fixed()
#
stop = time.time()
seconds['is_fixed'] = stop - start
try:
gc.collect()
_clear_expression_pool()
start = time.time()
#
r_ = generate_canonical_repn(expr)
#
stop = time.time()
seconds['generate_canonical'] = stop - start
except:
seconds['generate_canonical'] = -1
return seconds