1 /*
2 * Copyright (C) 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <audio_utils/float_test_utils.h>
18 #include <gtest/gtest.h>
19
TEST(audio_float_tests,Basic)20 TEST(audio_float_tests, Basic) {
21 // Precision test for the CPU.
22 // The ARM does subnormals but the x86-64 does not under fast-math.
23 //
24 // single precision float
25 EXPECT_EQ(127, android::audio_utils::test::test_max_exponent<float>());
26
27 // -126 is expected if subnormals are not implemented,
28 // the value will be less than that if subnormals are implemented.
29 EXPECT_LE(android::audio_utils::test::test_min_exponent<float>(), -126);
30
31 EXPECT_EQ(23, android::audio_utils::test::test_mantissa<float>());
32
33 // double precision float
34 EXPECT_EQ(1023, android::audio_utils::test::test_max_exponent<double>());
35
36 // -1022 is expected if subnormals are not implemented,
37 // the value will be less than that if subnormals are implemented.
38 EXPECT_LE(android::audio_utils::test::test_min_exponent<double>(), -1022);
39
40 EXPECT_EQ(52, android::audio_utils::test::test_mantissa<double>());
41 }
42