1 files changed, 32 insertions, 0 deletions
diff --git a/lib/type-props.h b/lib/type-props.h
new file mode 100644
index 000000000..c718cf12f
--- /dev/null
+++ b/lib/type-props.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2008 Nicira Networks.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef TYPE_PROPS_H
+#define TYPE_PROPS_H 1
+
+#include <limits.h>
+
+#define TYPE_IS_INTEGER(TYPE) ((TYPE) 1.5 == (TYPE) 1)
+#define TYPE_IS_SIGNED(TYPE) ((TYPE) 0 > (TYPE) -1)
+#define TYPE_VALUE_BITS(TYPE) (sizeof(TYPE) * CHAR_BIT - TYPE_IS_SIGNED(TYPE))
+#define TYPE_MINIMUM(TYPE) (TYPE_IS_SIGNED(TYPE) \
+                            ? ~(TYPE)0 << TYPE_VALUE_BITS(TYPE) \
+                            : 0)
+#define TYPE_MAXIMUM(TYPE) (TYPE_IS_SIGNED(TYPE) \
+                            ? ~(~(TYPE)0 << TYPE_VALUE_BITS(TYPE)) \
+                            : (TYPE)-1)
+
+#endif /* type-props.h */