/****************************************************************************
*
* 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 Vector.h
*
* math vector
*/
#pragma once
#include <inttypes.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include "../Vector.hpp"
#include "../test/test.hpp"
// arm specific
#include "../../CMSIS/Include/arm_math.h"
namespace math
{
class __EXPORT Vector
{
public:
// constructor
Vector(size_t rows) :
_rows(rows),
_data((float *)calloc(rows, sizeof(float))) {
}
Vector(size_t rows, const float *data) :
_rows(rows),
_data((float *)malloc(getSize())) {
memcpy(getData(), data, getSize());
}
// deconstructor
virtual ~Vector() {
delete [] getData();
}
// copy constructor (deep)
Vector(const Vector &right) :
_rows(right.getRows()),
_data((float *)malloc(getSize())) {
memcpy(getData(), right.getData(),
right.getSize());
}
// assignment
inline Vector &operator=(const Vector &right) {
#ifdef VECTOR_ASSERT
ASSERT(getRows() == right.getRows());
#endif
if (this != &right) {
memcpy(getData(), right.getData(),
right.getSize());
}
return *this;
}
// element accessors
inline float &operator()(size_t i) {
#ifdef VECTOR_ASSERT
ASSERT(i < getRows());
#endif
return getData()[i];
}
inline const float &operator()(size_t i) const {
#ifdef VECTOR_ASSERT
ASSERT(i < getRows());
#endif
return getData()[i];
}
// output
inline void print() const {
for (size_t i = 0; i < getRows(); i++) {
float sig;
int exp;
float num = (*this)(i);
float2SigExp(num, sig, exp);
printf("%6.3fe%03.3d,", (double)sig, exp);
}
printf("\n");
}
// boolean ops
inline bool operator==(const Vector &right) const {
for (size_t i = 0; i < getRows(); i++) {
if (fabsf(((*this)(i) - right(i))) > 1e-30f)
return false;
}
return true;
}
// scalar ops
inline Vector operator+(float right) const {
Vector result(getRows());
arm_offset_f32((float *)getData(),
right, result.getData(),
getRows());
return result;
}
inline Vector operator-(float right) const {
Vector result(getRows());
arm_offset_f32((float *)getData(),
-right, result.getData(),
getRows());
return result;
}
inline Vector operator*(float right) const {
Vector result(getRows());
arm_scale_f32((float *)getData(),
right, result.getData(),
getRows());
return result;
}
inline Vector operator/(float right) const {
Vector result(getRows());
arm_scale_f32((float *)getData(),
1.0f / right, result.getData(),
getRows());
return result;
}
// vector ops
inline Vector operator+(const Vector &right) const {
#ifdef VECTOR_ASSERT
ASSERT(getRows() == right.getRows());
#endif
Vector result(getRows());
arm_add_f32((float *)getData(),
(float *)right.getData(),
result.getData(),
getRows());
return result;
}
inline Vector operator-(const Vector &right) const {
#ifdef VECTOR_ASSERT
ASSERT(getRows() == right.getRows());
#endif
Vector result(getRows());
arm_sub_f32((float *)getData(),
(float *)right.getData(),
result.getData(),
getRows());
return result;
}
// other functions
inline float dot(const Vector &right) {
float result = 0;
arm_dot_prod_f32((float *)getData(),
(float *)right.getData(),
getRows(),
&result);
return result;
}
inline float norm() {
return sqrtf(dot(*this));
}
inline Vector unit() {
return (*this) / norm();
}
inline static Vector zero(size_t rows) {
Vector result(rows);
// calloc returns zeroed memory
return result;
}
inline void setAll(const float &val) {
for (size_t i = 0; i < getRows(); i++) {
(*this)(i) = val;
}
}
inline void set(const float *data) {
memcpy(getData(), data, getSize());
}
inline size_t getRows() const { return _rows; }
inline const float *getData() const { return _data; }
protected:
inline size_t getSize() const { return sizeof(float) * getRows(); }
inline float *getData() { return _data; }
inline void setData(float *data) { _data = data; }
private:
size_t _rows;
float *_data;
};
} // math
