1 /* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
2
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15
16 #include "tensorflow/lite/micro/micro_utils.h"
17
18 #include "tensorflow/lite/micro/testing/micro_test.h"
19
20 TF_LITE_MICRO_TESTS_BEGIN
21
TF_LITE_MICRO_TEST(FloatToAsymmetricQuantizedUInt8Test)22 TF_LITE_MICRO_TEST(FloatToAsymmetricQuantizedUInt8Test) {
23 using tflite::FloatToQuantizedType;
24 // [0, 127.5] -> zero_point=0, scale=0.5
25 TF_LITE_MICRO_EXPECT_EQ(0, FloatToQuantizedType<uint8_t>(0, 0.5, 0));
26 TF_LITE_MICRO_EXPECT_EQ(254, FloatToQuantizedType<uint8_t>(127, 0.5, 0));
27 TF_LITE_MICRO_EXPECT_EQ(255, FloatToQuantizedType<uint8_t>(127.5, 0.5, 0));
28 // [-10, 245] -> zero_point=10, scale=1.0
29 TF_LITE_MICRO_EXPECT_EQ(0, FloatToQuantizedType<uint8_t>(-10, 1.0, 10));
30 TF_LITE_MICRO_EXPECT_EQ(1, FloatToQuantizedType<uint8_t>(-9, 1.0, 10));
31 TF_LITE_MICRO_EXPECT_EQ(128, FloatToQuantizedType<uint8_t>(118, 1.0, 10));
32 TF_LITE_MICRO_EXPECT_EQ(253, FloatToQuantizedType<uint8_t>(243, 1.0, 10));
33 TF_LITE_MICRO_EXPECT_EQ(254, FloatToQuantizedType<uint8_t>(244, 1.0, 10));
34 TF_LITE_MICRO_EXPECT_EQ(255, FloatToQuantizedType<uint8_t>(245, 1.0, 10));
35 }
36
TF_LITE_MICRO_TEST(FloatToAsymmetricQuantizedInt8Test)37 TF_LITE_MICRO_TEST(FloatToAsymmetricQuantizedInt8Test) {
38 using tflite::FloatToQuantizedType;
39 // [-64, 63.5] -> zero_point=0, scale=0.5
40 TF_LITE_MICRO_EXPECT_EQ(2, FloatToQuantizedType<int8_t>(1, 0.5, 0));
41 TF_LITE_MICRO_EXPECT_EQ(4, FloatToQuantizedType<int8_t>(2, 0.5, 0));
42 TF_LITE_MICRO_EXPECT_EQ(6, FloatToQuantizedType<int8_t>(3, 0.5, 0));
43 TF_LITE_MICRO_EXPECT_EQ(-10, FloatToQuantizedType<int8_t>(-5, 0.5, 0));
44 TF_LITE_MICRO_EXPECT_EQ(-128, FloatToQuantizedType<int8_t>(-64, 0.5, 0));
45 TF_LITE_MICRO_EXPECT_EQ(127, FloatToQuantizedType<int8_t>(63.5, 0.5, 0));
46 // [-127, 128] -> zero_point=-1, scale=1.0
47 TF_LITE_MICRO_EXPECT_EQ(0, FloatToQuantizedType<int8_t>(1, 1.0, -1));
48 TF_LITE_MICRO_EXPECT_EQ(-1, FloatToQuantizedType<int8_t>(0, 1.0, -1));
49 TF_LITE_MICRO_EXPECT_EQ(126, FloatToQuantizedType<int8_t>(127, 1.0, -1));
50 TF_LITE_MICRO_EXPECT_EQ(127, FloatToQuantizedType<int8_t>(128, 1.0, -1));
51 TF_LITE_MICRO_EXPECT_EQ(-127, FloatToQuantizedType<int8_t>(-126, 1.0, -1));
52 TF_LITE_MICRO_EXPECT_EQ(-128, FloatToQuantizedType<int8_t>(-127, 1.0, -1));
53 }
54
TF_LITE_MICRO_TEST(FloatToSymmetricQuantizedInt8Test)55 TF_LITE_MICRO_TEST(FloatToSymmetricQuantizedInt8Test) {
56 using tflite::FloatToSymmetricQuantizedType;
57 // [-64, 63.5] -> zero_point=0, scale=0.5
58 TF_LITE_MICRO_EXPECT_EQ(2, FloatToSymmetricQuantizedType<int8_t>(1, 0.5));
59 TF_LITE_MICRO_EXPECT_EQ(4, FloatToSymmetricQuantizedType<int8_t>(2, 0.5));
60 TF_LITE_MICRO_EXPECT_EQ(6, FloatToSymmetricQuantizedType<int8_t>(3, 0.5));
61 TF_LITE_MICRO_EXPECT_EQ(-10, FloatToSymmetricQuantizedType<int8_t>(-5, 0.5));
62 TF_LITE_MICRO_EXPECT_EQ(-127,
63 FloatToSymmetricQuantizedType<int8_t>(-64, 0.5));
64 TF_LITE_MICRO_EXPECT_EQ(127,
65 FloatToSymmetricQuantizedType<int8_t>(63.5, 0.5));
66 // [-127, 128] -> zero_point=-1, scale=1.0
67 TF_LITE_MICRO_EXPECT_EQ(1, FloatToSymmetricQuantizedType<int8_t>(1, 1.0));
68 TF_LITE_MICRO_EXPECT_EQ(0, FloatToSymmetricQuantizedType<int8_t>(0, 1.0));
69 TF_LITE_MICRO_EXPECT_EQ(127, FloatToSymmetricQuantizedType<int8_t>(127, 1.0));
70 TF_LITE_MICRO_EXPECT_EQ(127, FloatToSymmetricQuantizedType<int8_t>(128, 1.0));
71 TF_LITE_MICRO_EXPECT_EQ(-126,
72 FloatToSymmetricQuantizedType<int8_t>(-126, 1.0));
73 TF_LITE_MICRO_EXPECT_EQ(-127,
74 FloatToSymmetricQuantizedType<int8_t>(-127, 1.0));
75 }
76
TF_LITE_MICRO_TEST(FloatToAsymmetricQuantizedInt32Test)77 TF_LITE_MICRO_TEST(FloatToAsymmetricQuantizedInt32Test) {
78 using tflite::FloatToSymmetricQuantizedType;
79 TF_LITE_MICRO_EXPECT_EQ(0, FloatToSymmetricQuantizedType<int32_t>(0, 0.5));
80 TF_LITE_MICRO_EXPECT_EQ(2, FloatToSymmetricQuantizedType<int32_t>(1, 0.5));
81 TF_LITE_MICRO_EXPECT_EQ(-2, FloatToSymmetricQuantizedType<int32_t>(-1, 0.5));
82 TF_LITE_MICRO_EXPECT_EQ(-100,
83 FloatToSymmetricQuantizedType<int32_t>(-50, 0.5));
84 TF_LITE_MICRO_EXPECT_EQ(100, FloatToSymmetricQuantizedType<int32_t>(50, 0.5));
85 }
86
TF_LITE_MICRO_TEST(AsymmetricQuantizeInt8)87 TF_LITE_MICRO_TEST(AsymmetricQuantizeInt8) {
88 float values[] = {-10.3, -3.1, -2.1, -1.9, -0.9, 0.1, 0.9, 1.85, 2.9, 4.1};
89 int8_t goldens[] = {-20, -5, -3, -3, -1, 1, 3, 5, 7, 9};
90 constexpr int length = sizeof(values) / sizeof(float);
91 int8_t quantized[length];
92 tflite::Quantize(values, quantized, length, 0.5, 1);
93 for (int i = 0; i < length; i++) {
94 TF_LITE_MICRO_EXPECT_EQ(quantized[i], goldens[i]);
95 }
96 }
97
TF_LITE_MICRO_TEST(AsymmetricQuantizeUInt8)98 TF_LITE_MICRO_TEST(AsymmetricQuantizeUInt8) {
99 float values[] = {-10.3, -3.1, -2.1, -1.9, -0.9, 0.1, 0.9, 1.85, 2.9, 4.1};
100 uint8_t goldens[] = {106, 121, 123, 123, 125, 127, 129, 131, 133, 135};
101 constexpr int length = sizeof(values) / sizeof(float);
102 uint8_t quantized[length];
103 tflite::Quantize(values, quantized, length, 0.5, 127);
104 for (int i = 0; i < length; i++) {
105 TF_LITE_MICRO_EXPECT_EQ(quantized[i], goldens[i]);
106 }
107 }
108
TF_LITE_MICRO_TEST(SymmetricQuantizeInt32)109 TF_LITE_MICRO_TEST(SymmetricQuantizeInt32) {
110 float values[] = {-10.3, -3.1, -2.1, -1.9, -0.9, 0.1, 0.9, 1.85, 2.9, 4.1};
111 int32_t goldens[] = {-21, -6, -4, -4, -2, 0, 2, 4, 6, 8};
112 constexpr int length = sizeof(values) / sizeof(float);
113 int32_t quantized[length];
114 tflite::SymmetricQuantize(values, quantized, length, 0.5);
115 for (int i = 0; i < length; i++) {
116 TF_LITE_MICRO_EXPECT_EQ(quantized[i], goldens[i]);
117 }
118 }
119
120 TF_LITE_MICRO_TESTS_END
121