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+/*
+Copyright 2015 Ian Jauslin
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/*
+Various tools
+*/
+
+#ifndef TOOLS_H
+#define TOOLS_H
+
+#include "types.h"
+
+int factorial(int n);
+int ipower(int n, int p);
+long double dpower(long double x, int p);
+
+// find an element in a list whose first element is its size
+int list_find(int* list, int x);
+// compare two lists
+int list_cmp(int* list1, int* list2);
+
+// find an element in a list whose first element is not its number of elements (skips first element)
+int unlist_find(int* list, int size, int x);
+// no error
+int unlist_find_noerr(int* list, int size, int x);
+
+// find an element in a list (checks first element)
+int intlist_find(int* list, int size, int x);
+// with error
+int intlist_find_err(int* list, int size, int x);
+
+// max and min
+int max(int x1, int x2);
+int min(int x1, int x2);
+
+#endif