1 files changed, 245 insertions, 0 deletions
diff --git a/src/lib/mathlib/math/generic/Vector.hpp b/src/lib/mathlib/math/generic/Vector.hpp
new file mode 100644
index 000000000..8cfdc676d
--- /dev/null
+++ b/src/lib/mathlib/math/generic/Vector.hpp
@@ -0,0 +1,245 @@
+/****************************************************************************
+ *
+ *   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"
+
+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+(const float &right) const {
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = (*this)(i) + right;
+		}
+
+		return result;
+	}
+	inline Vector operator-(const float &right) const {
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = (*this)(i) - right;
+		}
+
+		return result;
+	}
+	inline Vector operator*(const float &right) const {
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = (*this)(i) * right;
+		}
+
+		return result;
+	}
+	inline Vector operator/(const float &right) const {
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = (*this)(i) / right;
+		}
+
+		return result;
+	}
+	// vector ops
+	inline Vector operator+(const Vector &right) const {
+#ifdef VECTOR_ASSERT
+		ASSERT(getRows() == right.getRows());
+#endif
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = (*this)(i) + right(i);
+		}
+
+		return result;
+	}
+	inline Vector operator-(const Vector &right) const {
+#ifdef VECTOR_ASSERT
+		ASSERT(getRows() == right.getRows());
+#endif
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = (*this)(i) - right(i);
+		}
+
+		return result;
+	}
+	inline Vector operator-(void) const {
+		Vector result(getRows());
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result(i) = -((*this)(i));
+		}
+
+		return result;
+	}
+	// other functions
+	inline float dot(const Vector &right) const {
+		float result = 0;
+
+		for (size_t i = 0; i < getRows(); i++) {
+			result += (*this)(i) * (*this)(i);
+		}
+
+		return result;
+	}
+	inline float norm() const {
+		return sqrtf(dot(*this));
+	}
+	inline float length() const {
+		return norm();
+	}
+	inline Vector unit() const {
+		return (*this) / norm();
+	}
+	inline Vector normalized() const {
+		return unit();
+	}
+	inline void normalize() {
+		(*this) = (*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; }
+protected:
+	inline size_t getSize() const { return sizeof(float) * getRows(); }
+	inline float *getData() { return _data; }
+	inline const float *getData() const { return _data; }
+	inline void setData(float *data) { _data = data; }
+private:
+	size_t _rows;
+	float *_data;
+};
+
+} // math