Method binary_op_nan

Lib/test/test_opcache.py:1446–1472

()

        binary_op_zero_division()

        def binary_op_nan():
            def compactlong_lhs(arg):
                return (
                    42 + arg,
                    42 - arg,
                    42 * arg,
                    42 / arg,
                )
            def compactlong_rhs(arg):
                return (
                    arg + 42,
                    arg - 42,
                    arg * 2,
                    arg / 42,
                )
            nan = float('nan')
            for _ in range(_testinternalcapi.SPECIALIZATION_THRESHOLD):
                self.assertEqual(compactlong_lhs(1.0), (43.0, 41.0, 42.0, 42.0))
            for _ in range(_testinternalcapi.SPECIALIZATION_COOLDOWN):
                self.assertTrue(all(filter(lambda x: x is nan, compactlong_lhs(nan))))
            for _ in range(_testinternalcapi.SPECIALIZATION_THRESHOLD):
                self.assertEqual(compactlong_rhs(42.0), (84.0, 0.0, 84.0, 1.0))
            for _ in range(_testinternalcapi.SPECIALIZATION_COOLDOWN):
                self.assertTrue(all(filter(lambda x: x is nan, compactlong_rhs(nan))))

            self.assert_no_opcode(compactlong_lhs, "BINARY_OP_EXTEND")
            self.assert_no_opcode(compactlong_rhs, "BINARY_OP_EXTEND")

        binary_op_nan()