Starting on the model.h, but need to make layer structs and structs for loss and optimizers

include/numerics/sign.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "./core/omp_config.h"
+#include "detail/sign_serial.h"
+
+
+namespace numerics{
+
+	// ---------------- Elementwise ----------------
+	template <typename T>
+	inline void inplace_sign(T& c) {
+		detail::inplace_sign_serial(c);
+	}
+	template <typename T>
+	inline T sign(const T c) {
+		T out = c;
+		inplace_sign(out);
+		return out;
+	}
+
+
+
+	template <typename T>
+	inline void inplace_sign(utils::Vector<T>& v) {
+		detail::inplace_sign_serial(v);
+	}
+
+	template <typename T>
+	inline utils::Vector<T> sign(const utils::Vector<T>& v) {
+	    utils::Vector<T> out = v;
+	    inplace_sign(out);
+	    return out;
+	}
+
+
+
+
+	template <typename T>
+	inline void inplace_sign(utils::Matrix<T>& A) {
+		detail::inplace_sign_serial(A);
+	}
+
+	template <typename T>
+	inline utils::Matrix<T> sign(const utils::Matrix<T>& A) {
+	    utils::Matrix<T> out = A;
+	    inplace_sign(out);
+	    return out;
+	}
+
+
+}