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+/*
+Copyright 2016 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.
+*/
+
+/*
+  Useful functions
+*/
+
+#ifndef LIBINUM_UTILS_H
+#define LIBINUM_UTILS_H
+
+#include <mpfr.h>
+#include <stdio.h>
+
+// print a double at maximal precision
+int fprint_double(FILE* file, double x);
+// print a long double at maximal precision
+int fprint_ldouble(FILE* file, long double x);
+// print an mpfr at maximal precision
+int fprint_mpfr(FILE* file, mpfr_t x);
+
+// print information about data types
+int print_datatype_info();
+#endif