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-- or more contributor license agreements.  See the NOTICE file
-- distributed with this work for additional information
-- regarding copyright ownership.  The ASF licenses this file
-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
-- with the License.  You may obtain a copy of the License at
--
--   http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing,
-- software distributed under the License is distributed on an
-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-- KIND, either express or implied.  See the License for the
-- specific language governing permissions and limitations
-- under the License.

statement
CREATE TABLE test_log(d double) USING parquet

statement
INSERT INTO test_log VALUES (1.0), (2.718281828459045), (10.0), (0.5), (NULL), (cast('NaN' as double)), (cast('Infinity' as double)), (0.0), (-1.0)

query tolerance=1e-6
SELECT ln(d) FROM test_log

query tolerance=1e-6
SELECT log(10.0, d) FROM test_log

-- column + literal (log base from column)
query tolerance=1e-6
SELECT log(d, 10.0) FROM test_log

-- literal (1-arg form)
query tolerance=1e-6
SELECT ln(1.0), ln(2.718281828459045), ln(10.0), ln(NULL)

-- literal + literal (2-arg form)
query tolerance=1e-6
SELECT log(10.0, 100.0), log(2.0, 8.0), log(10.0, 1.0), log(NULL, 10.0)

-- edge cases: base or value <= 0 should return null
query tolerance=1e-6
SELECT log(0.0, 10.0), log(-1.0, 10.0), log(10.0, 0.0), log(10.0, -1.0), log(0.0, 0.0), log(-1.0, -1.0)

-- edge case: log(1, 1) produces NaN (0/0) which Spark preserves as NaN
query tolerance=1e-6
SELECT log(1.0, 1.0)
