Done with activation softmax backwards

include/tensor/generators/eye.hpp

@@ -0,0 +1,93 @@
+/**++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ * 
+ *
+ *                                              PANIC
+ *                              Portable Algorithms and Numerics In C++
+ *
+ *                       Scientific computing from scratch, with feeling.
+ *
+ * Copyright (c) 2026 Michelle Bausager
+ *
+ * This file is part of PANIC.
+ *
+ * PANIC is free software licensed under the GNU General Public License v3.0 or later.
+ * You may redistribute and/or modify it under the terms of the GPL.
+ *
+ * PANIC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the LICENSE file for the full license text.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ *
+ * Project Name:      PANIC
+ * Module Name:       tensor
+ * File Name:         eye.hpp
+ * Revision:          0.1.0
+ * Date:              31-07-2026
+ * Author:            Michelle Bausager
+ *
+ * Description:
+ * Functions to generate eye matrices
+ *
+ *++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
+#pragma once
+
+#include <tensor/matrix.hpp> // for panic::vector
+#include <config/types.hpp> 
+
+namespace panic{
+namespace tensor{
+
+/**
+ * @brief Outputs an eye matrix
+ *
+ * Computes:
+ * @code
+
+ * @endcode
+ *
+ * @tparam T Numeric element type.
+ * @param size Number or rows and columns.
+ * @param A Output matrix
+ *
+ * @return true if @p A was resized and filled successfully.
+ * @return false if resizing @p A failed.
+ *
+ * @note This overload writes the result into an existing vector to avoid
+ *       unnecessary temporary allocations.
+ */
+template <typename T>
+bool eye(const panic::types::uint_t size, panic::tensor::matrix<T> A);
+
+/**
+ * @brief Returns a eye matrix
+ *
+ * Computes:
+ * @code
+ * @endcode
+ *
+ * @param T Numeric element type.
+ * @param size Number of rows and columns.
+ *
+ * @return A new vector containing the result.
+ * @return An empty vector if the operation fails.
+ *
+ * @note This overload is convenient, but may allocate a new vector.
+ */
+//template <typename T>
+//panic::tensor::matrix<T> eye(const T size);
+
+
+
+
+
+
+
+
+
+
+
+} // namespace tensor
+} // namespace panic

include/tensor/generators/one_hot.hpp

@@ -0,0 +1,91 @@
+/**++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ * 
+ *
+ *                                              PANIC
+ *                              Portable Algorithms and Numerics In C++
+ *
+ *                       Scientific computing from scratch, with feeling.
+ *
+ * Copyright (c) 2026 Michelle Bausager
+ *
+ * This file is part of PANIC.
+ *
+ * PANIC is free software licensed under the GNU General Public License v3.0 or later.
+ * You may redistribute and/or modify it under the terms of the GPL.
+ *
+ * PANIC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the LICENSE file for the full license text.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ *
+ * Project Name:      PANIC
+ * Module Name:       tensor
+ * File Name:         one_hot.hpp
+ * Revision:          0.1.0
+ * Date:              31-07-2026
+ * Author:            Michelle Bausager
+ *
+ * Description:
+ * Functions to one_hot matrices
+ *
+ *++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
+#pragma once
+
+#include <tensor/vector.hpp>
+#include <tensor/matrix.hpp> // for panic::vector
+#include <config/types.hpp> 
+
+namespace panic{
+namespace tensor{
+
+/**
+ * @brief Outputs an one_hot matrix
+ *
+ * Computes:
+ * @code
+
+ * @endcode
+ *
+ * @tparam T Numeric element type.
+ * @param size Number of columns.
+ * @param a Input vector that contains here 1 should be
+ * @param B Output matrix
+ *
+ * @return true if @p B was resized and filled successfully.
+ * @return false if resizing @p B failed.
+ *
+ * @note This overload writes the result into an existing vector to avoid
+ *       unnecessary temporary allocations.
+ */
+template <typename T>
+bool one_hot(const panic::types::uint_t size, const panic::tensor::uint_vector& a, panic::tensor::matrix<T>& B);
+
+/**
+ * @brief Returns a one_hot matrix
+ *
+ * Computes:
+ * @code
+ * @endcode
+ *
+ * @param T Numeric element type.
+ * @param size Number of columns.
+ * @param a Input vector that contains here 1 should be
+ *
+ * @return A new vector containing the result.
+ * @return An empty vector if the operation fails.
+ *
+ * @note This overload is convenient, but may allocate a new vector.
+ */
+//template <typename T>
+//panic::tensor::matrix<T> one_hot(const panic::types::uint_t size, const panic::tensor::vector<T>& a);
+
+
+
+
+
+
+} // namespace tensor
+} // namespace panic