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author | px4dev <px4@purgatory.org> | 2013-01-06 13:56:49 -0800 |
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committer | px4dev <px4@purgatory.org> | 2013-01-06 13:56:49 -0800 |
commit | 43ccb257a8a60a24b81396dfbf7841917db3f74e (patch) | |
tree | 409374fff1ec65b5bb2adab55d52e6d8448b1274 /apps/mathlib/math/arm/Matrix.hpp | |
parent | 98a53e85d63a9824db38b564e1455b42adef5e30 (diff) | |
download | px4-firmware-43ccb257a8a60a24b81396dfbf7841917db3f74e.tar.gz px4-firmware-43ccb257a8a60a24b81396dfbf7841917db3f74e.tar.bz2 px4-firmware-43ccb257a8a60a24b81396dfbf7841917db3f74e.zip |
Move the math library pieces out of systemlib into mathlib
Diffstat (limited to 'apps/mathlib/math/arm/Matrix.hpp')
-rw-r--r-- | apps/mathlib/math/arm/Matrix.hpp | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/apps/mathlib/math/arm/Matrix.hpp b/apps/mathlib/math/arm/Matrix.hpp new file mode 100644 index 000000000..63d755649 --- /dev/null +++ b/apps/mathlib/math/arm/Matrix.hpp @@ -0,0 +1,292 @@ +/**************************************************************************** + * + * 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 Matrix.h + * + * matrix code + */ + +#pragma once + + +#include <inttypes.h> +#include <assert.h> +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <math.h> + +#include "../Vector.hpp" +#include "../Matrix.hpp" + +// arm specific +#include "arm_math.h" + +namespace math +{ + +class __EXPORT Matrix +{ +public: + // constructor + Matrix(size_t rows, size_t cols) : + _matrix() { + arm_mat_init_f32(&_matrix, + rows, cols, + (float *)calloc(rows * cols, sizeof(float))); + } + Matrix(size_t rows, size_t cols, const float *data) : + _matrix() { + arm_mat_init_f32(&_matrix, + rows, cols, + (float *)malloc(rows * cols * sizeof(float))); + memcpy(getData(), data, getSize()); + } + // deconstructor + virtual ~Matrix() { + delete [] _matrix.pData; + } + // copy constructor (deep) + Matrix(const Matrix &right) : + _matrix() { + arm_mat_init_f32(&_matrix, + right.getRows(), right.getCols(), + (float *)malloc(right.getRows()* + right.getCols()*sizeof(float))); + memcpy(getData(), right.getData(), + getSize()); + } + // assignment + inline Matrix &operator=(const Matrix &right) { +#ifdef MATRIX_ASSERT + ASSERT(getRows() == right.getRows()); + ASSERT(getCols() == right.getCols()); +#endif + + if (this != &right) { + memcpy(getData(), right.getData(), + right.getSize()); + } + + return *this; + } + // element accessors + inline float &operator()(size_t i, size_t j) { +#ifdef MATRIX_ASSERT + ASSERT(i < getRows()); + ASSERT(j < getCols()); +#endif + return getData()[i * getCols() + j]; + } + inline const float &operator()(size_t i, size_t j) const { +#ifdef MATRIX_ASSERT + ASSERT(i < getRows()); + ASSERT(j < getCols()); +#endif + return getData()[i * getCols() + j]; + } + // output + inline void print() const { + for (size_t i = 0; i < getRows(); i++) { + for (size_t j = 0; j < getCols(); j++) { + float sig; + int exp; + float num = (*this)(i, j); + float2SigExp(num, sig, exp); + printf("%6.3fe%03.3d,", (double)sig, exp); + } + + printf("\n"); + } + } + // boolean ops + inline bool operator==(const Matrix &right) const { + for (size_t i = 0; i < getRows(); i++) { + for (size_t j = 0; j < getCols(); j++) { + if (fabsf((*this)(i, j) - right(i, j)) > 1e-30f) + return false; + } + } + + return true; + } + // scalar ops + inline Matrix operator+(float right) const { + Matrix result(getRows(), getCols()); + arm_offset_f32((float *)getData(), right, + (float *)result.getData(), getRows()*getCols()); + return result; + } + inline Matrix operator-(float right) const { + Matrix result(getRows(), getCols()); + arm_offset_f32((float *)getData(), -right, + (float *)result.getData(), getRows()*getCols()); + return result; + } + inline Matrix operator*(float right) const { + Matrix result(getRows(), getCols()); + arm_mat_scale_f32(&_matrix, right, + &(result._matrix)); + return result; + } + inline Matrix operator/(float right) const { + Matrix result(getRows(), getCols()); + arm_mat_scale_f32(&_matrix, 1.0f / right, + &(result._matrix)); + return result; + } + // vector ops + inline Vector operator*(const Vector &right) const { +#ifdef MATRIX_ASSERT + ASSERT(getCols() == right.getRows()); +#endif + Matrix resultMat = (*this) * + Matrix(right.getRows(), 1, right.getData()); + return Vector(getRows(), resultMat.getData()); + } + // matrix ops + inline Matrix operator+(const Matrix &right) const { +#ifdef MATRIX_ASSERT + ASSERT(getRows() == right.getRows()); + ASSERT(getCols() == right.getCols()); +#endif + Matrix result(getRows(), getCols()); + arm_mat_add_f32(&_matrix, &(right._matrix), + &(result._matrix)); + return result; + } + inline Matrix operator-(const Matrix &right) const { +#ifdef MATRIX_ASSERT + ASSERT(getRows() == right.getRows()); + ASSERT(getCols() == right.getCols()); +#endif + Matrix result(getRows(), getCols()); + arm_mat_sub_f32(&_matrix, &(right._matrix), + &(result._matrix)); + return result; + } + inline Matrix operator*(const Matrix &right) const { +#ifdef MATRIX_ASSERT + ASSERT(getCols() == right.getRows()); +#endif + Matrix result(getRows(), right.getCols()); + arm_mat_mult_f32(&_matrix, &(right._matrix), + &(result._matrix)); + return result; + } + inline Matrix operator/(const Matrix &right) const { +#ifdef MATRIX_ASSERT + ASSERT(right.getRows() == right.getCols()); + ASSERT(getCols() == right.getCols()); +#endif + return (*this) * right.inverse(); + } + // other functions + inline Matrix transpose() const { + Matrix result(getCols(), getRows()); + arm_mat_trans_f32(&_matrix, &(result._matrix)); + return result; + } + inline void swapRows(size_t a, size_t b) { + if (a == b) return; + + for (size_t j = 0; j < getCols(); j++) { + float tmp = (*this)(a, j); + (*this)(a, j) = (*this)(b, j); + (*this)(b, j) = tmp; + } + } + inline void swapCols(size_t a, size_t b) { + if (a == b) return; + + for (size_t i = 0; i < getRows(); i++) { + float tmp = (*this)(i, a); + (*this)(i, a) = (*this)(i, b); + (*this)(i, b) = tmp; + } + } + /** + * inverse based on LU factorization with partial pivotting + */ + Matrix inverse() const { +#ifdef MATRIX_ASSERT + ASSERT(getRows() == getCols()); +#endif + Matrix result(getRows(), getCols()); + Matrix work = (*this); + arm_mat_inverse_f32(&(work._matrix), + &(result._matrix)); + return result; + } + inline void setAll(const float &val) { + for (size_t i = 0; i < getRows(); i++) { + for (size_t j = 0; j < getCols(); j++) { + (*this)(i, j) = val; + } + } + } + inline void set(const float *data) { + memcpy(getData(), data, getSize()); + } + inline size_t getRows() const { return _matrix.numRows; } + inline size_t getCols() const { return _matrix.numCols; } + inline static Matrix identity(size_t size) { + Matrix result(size, size); + + for (size_t i = 0; i < size; i++) { + result(i, i) = 1.0f; + } + + return result; + } + inline static Matrix zero(size_t size) { + Matrix result(size, size); + result.setAll(0.0f); + return result; + } + inline static Matrix zero(size_t m, size_t n) { + Matrix result(m, n); + result.setAll(0.0f); + return result; + } +protected: + inline size_t getSize() const { return sizeof(float) * getRows() * getCols(); } + inline float *getData() { return _matrix.pData; } + inline const float *getData() const { return _matrix.pData; } + inline void setData(float *data) { _matrix.pData = data; } +private: + arm_matrix_instance_f32 _matrix; +}; + +} // namespace math |