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94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
/****************************************************************************
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*
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* Copyright (C) 2012 PX4 Development Team. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/**
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* @file test.cpp
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*
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* Test library code
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*/
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#include <stdio.h>
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#include <math.h>
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#include "test.hpp"
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bool __EXPORT equal(float a, float b, float epsilon)
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{
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float diff = fabsf(a - b);
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if (diff > epsilon) {
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printf("not equal ->\n\ta: %12.8f\n\tb: %12.8f\n", double(a), double(b));
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return false;
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} else return true;
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}
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void __EXPORT float2SigExp(
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const float &num,
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float &sig,
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int &exp)
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{
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if (isnan(num) || isinf(num)) {
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sig = 0.0f;
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exp = -99;
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return;
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}
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if (fabsf(num) < 1.0e-38f) {
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sig = 0;
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exp = 0;
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return;
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}
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exp = log10f(fabsf(num));
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if (exp > 0) {
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exp = ceil(exp);
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} else {
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exp = floor(exp);
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}
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sig = num;
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// cheap power since it is integer
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if (exp > 0) {
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for (int i = 0; i < abs(exp); i++) sig /= 10;
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} else {
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for (int i = 0; i < abs(exp); i++) sig *= 10;
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}
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}
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