From b4efb1d8f5f044d2ec7cdd4e6ba1e933f2ac0304 Mon Sep 17 00:00:00 2001
From: Jens Ahrensfeld <jens@jayfield.org>
Date: Mon, 21 Oct 2019 19:15:45 +0000
Subject: [PATCH] - initial import

git-svn-id: http://moon:8086/svn/software/trunk/projects/Rbm@559 b431acfa-c32f-4a4a-93f1-934dc6c82436
---
 Makefile        | 16 ++++++++++++++++
 source/main.cpp | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 Makefile
 create mode 100644 source/main.cpp

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..f79cfc5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,16 @@
+SRCS := source/main.cpp
+BUILD_DIR := ./build
+CXXFLAGS += -o0	-std=c++11
+LIBS := -larmadillo
+	
+all: ${BUILD_DIR}/main.elf
+	
+
+${BUILD_DIR}/main.elf: ${BUILD_DIR} ${SRCS}
+	g++ ${CXXFLAGS} ${SRCS} -o $@ ${LIBS}
+
+${BUILD_DIR}:
+	mkdir -p $@
+	
+clean:
+	rm -rf ${BUILD_DIR}/*
\ No newline at end of file
diff --git a/source/main.cpp b/source/main.cpp
new file mode 100644
index 0000000..e61efef
--- /dev/null
+++ b/source/main.cpp
@@ -0,0 +1,34 @@
+#include <cstdio>
+#include <cmath>
+#include <armadillo>
+
+int main()
+{
+	printf("Hallo, Welt!\n");
+
+	// Position of a particle                     //    |
+	arma::vec Pos = {{0},                         //    | (0,1)
+				   {1}};                        //    +---x-->
+
+	// Rotation matrix 
+	double phi = -3.1416/2; 
+	arma::mat RotM = {{+cos(phi), -sin(phi)},
+					{+sin(phi), +cos(phi)}};
+
+	Pos.print("Current position of the particle:");
+	std::cout << "Rotating the point " << phi*180/3.1416 << " deg" << std::endl;
+
+	Pos = RotM*Pos;
+
+	Pos.print("New position of the particle:");   //    ^
+												//    x (1,0)
+												//    | 
+	arma::mat Z = arma::eye<arma::mat>(4,4);
+	Z.print("Z:");
+	printf("Z.n_rows = %d\n", (int)Z.n_rows);
+	printf("Z.n_cols = %d\n", (int)Z.n_cols);
+	printf("Z.n_elem = %d\n", (int)Z.n_elem);
+	//    +------>
+
+	return 0;
+}
\ No newline at end of file