Refactor progress

Next step is ramdom and equal. I also need to have a look at add and the serial naming of the functions.

include/numerics/detail/pow_serial.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <cstdint> //uint64_t
+#include <stdexcept> // std::runtime_error
+#include <cmath> // std::pow
+
+#include "../utils/vector.h"
+#include "../utils/matrix.h"
+
+namespace numerics::detail{
+	
+	// ---------------- Scalar ----------------
+	template <typename T>
+	void inplace_pow_scalar_serial(utils::Matrix<T>& A, const T c) {
+	    const uint64_t rows = A.rows();
+	    const uint64_t cols = A.cols();
+		for (uint64_t i = 0; i < rows; ++i){
+			for (uint64_t j = 0; j < cols; ++j){
+				A(i,j) = static_cast<T>(std::pow(A(i,j),c));
+			}
+		}
+	}
+
+	template <typename T>
+	void inplace_pow_scalar_serial(utils::Vector<T>& v, const T c) {
+		for (uint64_t i = 0; i < v.size(); ++i){
+			v[i] = static_cast<T>(std::pow(v[i], c));
+		}
+	}
+	// ---------------- Elemenwise ----------------
+	template <typename T>
+	void inplace_pow_elementwise_serial(utils::Matrix<T>& A, const utils::Matrix<T>& B) {
+	    const uint64_t rows = A.rows();
+	    const uint64_t cols = A.cols();
+	    if (rows != B.rows() || cols != B.cols()) {
+	        throw std::runtime_error("inplace_pow_elementwise_serial: dimension mismatch");
+	    }
+		for (uint64_t i = 0; i < rows; ++i){
+			for (uint64_t j = 0; j < cols; ++j){
+				A(i,j) = static_cast<T>(std::pow(A(i,j), B(i,j)));
+			}
+		}
+	}
+
+	template <typename T>
+	void inplace_pow_elementwise_serial(utils::Vector<T>& v, const utils::Vector<T>& p) {
+	    if (v.size() != p.size()) {
+	        throw std::runtime_error("inplace_pow_elementwise_serial: dimension mismatch");
+	    }
+		for (uint64_t i = 0; i < v.size(); ++i){
+			v[i] = static_cast<T>(std::pow(v[i], p[i]));
+		}
+	}
+} // namespace numerics
+