--- /dev/null
+/*
+ * Copyright (C) 2015 Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "util.h"
+#include <stdlib.h>
+#include <errno.h>
+
+int set_llong(char *str, long long *val)
+{
+ char *end = NULL;
+ errno = 0;
+ *val = strtoll(str, &end, 0);
+ if (end && *end)
+ return -EINVAL;
+ if (errno == ERANGE)
+ return -ERANGE;
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (C) 2015 Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _UTIL_H
+#define _UTIL_H
+
+int set_llong(char *str, long long *val);
+
+#endif