1 /*
2 * Copyright (c) 2021 Stephanos Ioannidis <root@stephanos.io>
3 * Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
4 *
5 * SPDX-License-Identifier: Apache-2.0
6 */
7
8 #include <zephyr/ztest.h>
9 #include <zephyr/kernel.h>
10 #include <stdlib.h>
11 #include <arm_math_f16.h>
12 #include "../../common/test_common.h"
13
14 #include "f16.pat"
15
16 #define REL_ERROR_THRESH (3.0e-3)
17
18 /* Note: this source file is only built when CONFIG_CMSIS_DSP_FLOAT16 is enabled */
19
20 ZTEST_SUITE(bayes_f16, NULL, NULL, NULL, NULL, NULL);
21
ZTEST(bayes_f16,test_gaussian_naive_bayes_predict_f16)22 ZTEST(bayes_f16, test_gaussian_naive_bayes_predict_f16)
23 {
24 arm_gaussian_naive_bayes_instance_f16 inst;
25
26 size_t index;
27 const uint16_t pattern_count = in_dims[0];
28 const uint16_t class_count = in_dims[1];
29 const uint16_t vec_dims = in_dims[2];
30
31 const float16_t *params = (const float16_t *)in_param;
32 const float16_t *input = (const float16_t *)in_val;
33 float16_t *output_probs_buf, *output_probs;
34 uint16_t *output_preds_buf, *output_preds;
35 float16_t *temp;
36
37 /* Initialise instance */
38 inst.vectorDimension = vec_dims;
39 inst.numberOfClasses = class_count;
40 inst.theta = params;
41 inst.sigma = params + (class_count * vec_dims);
42 inst.classPriors = params + (2 * class_count * vec_dims);
43 inst.epsilon = params[class_count + (2 * class_count * vec_dims)];
44
45 /* Allocate output buffers */
46 output_probs_buf =
47 malloc(pattern_count * class_count * sizeof(float16_t));
48 zassert_not_null(output_probs_buf, ASSERT_MSG_BUFFER_ALLOC_FAILED);
49
50 output_preds_buf =
51 malloc(pattern_count * sizeof(uint16_t));
52 zassert_not_null(output_preds_buf, ASSERT_MSG_BUFFER_ALLOC_FAILED);
53
54 output_probs = output_probs_buf;
55 output_preds = output_preds_buf;
56
57 temp = malloc(pattern_count * class_count * sizeof(float16_t));
58 zassert_not_null(temp, ASSERT_MSG_BUFFER_ALLOC_FAILED);
59
60 /* Enumerate patterns */
61 for (index = 0; index < pattern_count; index++) {
62 /* Run test function */
63 *output_preds =
64 arm_gaussian_naive_bayes_predict_f16(
65 &inst, input, output_probs, temp);
66
67 /* Increment pointers */
68 input += vec_dims;
69 output_probs += class_count;
70 output_preds++;
71 }
72
73 /* Validate output */
74 zassert_true(
75 test_rel_error_f16(pattern_count, output_probs_buf,
76 (float16_t *)ref_prob, REL_ERROR_THRESH),
77 ASSERT_MSG_REL_ERROR_LIMIT_EXCEED);
78
79 zassert_true(
80 test_equal_q15(pattern_count, output_preds_buf, ref_pred),
81 ASSERT_MSG_INCORRECT_COMP_RESULT);
82
83 /* Free output buffers */
84 free(output_probs_buf);
85 free(output_preds_buf);
86 }
87
