sema: New program for hacking with semaphores.

[misc] / timemax.h

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+/* -*-c-*-
+ *
+ * Return the largest allowable @time_t@ value
+ *
+ * (c) 2016 Mark Wooding
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef TIMEMAX_H
+#define TIMEMAX_H
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <time.h>
+
+/*----- Functions provided ------------------------------------------------*/
+
+/* --- @timemax@ --- *
+ *
+ * Arguments:  ---
+ *
+ * Returns:    The largest value repesentable in an object of type @time_t@.
+ *
+ * Use:                For some stupid reason there isn't a @TIME_MAX@ anywhere, and
+ *             it's really hard to discover the right value in C.  But it's
+ *             quite easy in C++, so that's what we do.
+ */
+
+time_t timemax(void);
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif