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