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diff --git a/math/math.h b/math/math.h
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+/*
+ * math.h - basic vector calculations
+ *
+ * author: Frank Zirkelbach <frank.zirkelbach@physik.uni-augsburg.de>
+ *
+ */
+
+#ifndef MATH_H
+#define MATH_H
+
+/* datatypes */
+
+typedef struct s_3dvec {
+	double x;
+	double y;
+	double z;
+} t_3dvec;
+
+/* function prototypes */
+
+int v3_add(t_3dvec *sum,t_3dvec *a,t_3dvec *b);
+int v3_sub(t_3dvec *sum,t_3dvec *a,t_3dvec *b);
+int v3_scale(t_3dvec *result,t_3dvec *a,double s);
+int v3_zero(t_3dvec *vec);
+int v3_set(t_3dvec *vec,double *ptr);
+int v3_copy(t_3dvec *trg,t_3dvec *src);
+int v3_cmp(t_3dvec *a,t_3dvec *b);
+
+#endif