ESP-IDF
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Outline
#include <math.h>
#include "mesh/types.h"
#define MINDIFF
bt_mesh_sqrt(float)
bt_mesh_ceil(float)
bt_mesh_log2(float)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/bt/esp_ble_mesh/models/common/model_common.c
 
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/* * SPDX-FileCopyrightText: 2018 Vikrant More * SPDX-FileContributor: 2018-2023 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <math.h> #include "mesh/types.h" #define MINDIFF (2.25e-308) float bt_mesh_sqrt(float square) { float root = 0.0, last = 0.0, diff = 0.0; root = square / 3.0; diff = 1; if (square <= 0) { return 0; }{...} do { last = root; root = (root + square / root) / 2.0; diff = root - last; }{...} while (diff > MINDIFF || diff < -MINDIFF); return root; }{ ... } int32_t bt_mesh_ceil(float num) { int32_t inum = (int32_t)num; if (num == (float)inum) { return inum; }{...} return inum + 1; }{ ... } float bt_mesh_log2(float num) { return log2f(num); }{ ... }
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