Rolling 20220526

code/components/esp-nn/tests/src/softmax_test.c

@@ -0,0 +1,101 @@
+// Copyright 2022 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed 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.
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc.h>
+
+#include <esp_nn.h>
+#include "test_utils.h"
+
+void esp_nn_softmax_s8_test()
+{
+    const int32_t height = 8;
+    const int32_t width = 32;
+    const int32_t diff_min = -128;
+    const int32_t mult = INT32_MAX / 2;
+    const int32_t shift = 7;
+    void *scratch_buf = NULL;
+    const int size = width * height;
+    int8_t *input, *out_ansi, *out_opt;
+
+    input = memalign(16, size);
+    out_ansi = memalign(16, size);
+    out_opt = memalign(16, size);
+
+    if (input == NULL || out_ansi == NULL || out_opt == NULL) {
+        printf(ANSI_COLOR_RED"%s buffer allocations failed\n"ANSI_COLOR_RESET, __FUNCTION__);
+        goto softmax_s8_cleanup;
+    }
+
+    /* Generate input data between -128 -> +127 */
+    for (int i = 0; i < size; ++i) {
+        input[i] = rand() % 255 - 128;
+    }
+
+    /* enable profiler */
+    profile_c_start();
+
+    /* C function */
+    esp_nn_softmax_s8_ansi(input, height, width, mult, shift, diff_min, out_ansi);
+
+    profile_c_end();
+
+    int32_t scratch_buf_size = esp_nn_get_softmax_scratch_size(width, height);
+    if (scratch_buf_size) {
+        scratch_buf = memalign(4, scratch_buf_size);
+        if (scratch_buf == NULL) {
+            printf(ANSI_COLOR_RED"%s scratch_buf alloc failed size %d\n"ANSI_COLOR_RESET, __FUNCTION__, scratch_buf_size);
+            goto softmax_s8_cleanup;
+        }
+        esp_nn_set_softmax_scratch_buf(scratch_buf);
+    }
+
+    profile_opt_start();
+
+    /* Optimized function */
+    esp_nn_softmax_s8(input, height, width, mult, shift, diff_min, out_opt);
+
+    /* disable profiler */
+    profile_opt_end();
+
+    bool ret = CHECK_EQUAL(out_ansi, out_opt, size);
+    if (ret == false) {
+        printf(ANSI_COLOR_RED"%s failed\n"ANSI_COLOR_RESET, __FUNCTION__);
+        printf("Output: \n");
+        PRINT_ARRAY_HEX(out_opt, width, height);
+        printf("Expected: \n");
+        PRINT_ARRAY_HEX(out_ansi, width, height);
+        printf("Input:\n");
+        PRINT_ARRAY_HEX(input, width, height);
+        goto softmax_s8_cleanup;
+    }
+    printf(ANSI_COLOR_GREEN"%s passed\n"ANSI_COLOR_RESET, __FUNCTION__);
+
+softmax_s8_cleanup:
+    if (input) {
+        free (input);
+    }
+    if (out_ansi) {
+        free (out_ansi);
+    }
+    if (out_opt) {
+        free (out_opt);
+    }
+    if (scratch_buf) {
+        free (scratch_buf);
+    }
+}