/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Copyright (C) 1986-2020, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure, Markus Armbruster
*
* Empire is free software: you can redistribute it and/or modify
*
* Known contributors to this file:
* Doug Hay, 1998
- * Markus Armbruster, 2004-2014
+ * Markus Armbruster, 2004-2020
*/
#ifndef MISC_H
#endif
#ifndef bit
-#define bit(x) (1<<(x))
+#define bit(x) (1U<<(x))
#endif
#define minutes(x) (60*(x))
extern void oops(char *, char *, int);
extern void (*oops_handler)(void);
+/*
+ * Assert constant expression @cond, return 1.
+ * If @cond is zero, force a compilation error.
+ */
+#define BUILD_ASSERT_ONE(cond) \
+ (sizeof(char[1 - 2 * !(cond)]))
+
+/*
+ * Assert constant expression @cond.
+ * If @cond is zero, force a compilation error.
+ */
+#define BUILD_ASSERT(cond) \
+ ((void)BUILD_ASSERT_ONE(cond))
+
+/*
+ * Number of elements in ARRAY.
+ */
+#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
+
void exit_nomem(void) ATTRIBUTE((noreturn));
/* return codes from command routines */
extern char *prbuf(char *format, ...)
ATTRIBUTE((format (printf, 1, 2)));
-#define AGREE_FREE 0
-#define AGREE_PROPOSED 1
-#define AGREE_SIGNED 2
-
#endif