Move lib/type-props.h to include/openvswitch directory

Signed-off-by: Ben Warren <ben@skyportsystems.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>

2 files changed, 56 insertions, 0 deletions

diff --git a/include/openvswitch/automake.mk b/include/openvswitch/automake.mk
index 21b863801..a96daff4c 100644
--- a/include/openvswitch/automake.mk
+++ b/include/openvswitch/automake.mk
@@ -15,6 +15,7 @@ openvswitchinclude_HEADERS = \
 	include/openvswitch/thread.h \
 	include/openvswitch/token-bucket.h \
 	include/openvswitch/tun-metadata.h \
+	include/openvswitch/type-props.h \
 	include/openvswitch/types.h \
 	include/openvswitch/util.h \
 	include/openvswitch/uuid.h \
diff --git a/include/openvswitch/type-props.h b/include/openvswitch/type-props.h
new file mode 100644
index 000000000..bf879cd82
--- /dev/null
+++ b/include/openvswitch/type-props.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2008, 2011, 2015 Nicira, Inc.
+ *
+ * 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.
+ */
+
+#ifndef OPENVSWITCH_TYPE_PROPS_H
+#define OPENVSWITCH_TYPE_PROPS_H 1
+
+#include <limits.h>
+
+/* True if TYPE is _Bool, false otherwise. */
+#define TYPE_IS_BOOL(TYPE) ((TYPE) 1 == (TYPE) 2)
+
+/* True if TYPE is an integer type (including _Bool), false if it is a
+ * floating-point type. */
+#define TYPE_IS_INTEGER(TYPE) ((TYPE) 1.5 == (TYPE) 1)
+
+/* True if TYPE is a signed integer or floating point type, otherwise false. */
+#define TYPE_IS_SIGNED(TYPE) ((TYPE) 1 > (TYPE) -1)
+
+/* The number of value bits in an signed or unsigned integer TYPE:
+ *
+ *    - _Bool has 1 value bit.
+ *
+ *    - An N-bit unsigned integer type has N value bits.
+ *
+ *    - An N-bit signed integer type has N-1 value bits.
+ */
+#define TYPE_VALUE_BITS(TYPE) \
+    (TYPE_IS_BOOL(TYPE) ? 1 : sizeof(TYPE) * CHAR_BIT - TYPE_IS_SIGNED(TYPE))
+
+/* The minimum or maximum value of a signed or unsigned integer TYPE. */
+#define TYPE_MINIMUM(TYPE) (TYPE_IS_SIGNED(TYPE) ? -TYPE_MAXIMUM(TYPE) - 1 : 0)
+#define TYPE_MAXIMUM(TYPE) \
+    ((((TYPE)1 << (TYPE_VALUE_BITS(TYPE) - 1)) - 1) * 2 + 1)
+
+/* Number of decimal digits required to format an integer of the given TYPE.
+ * Includes space for a sign, if TYPE is signed, but not for a null
+ * terminator.
+ *
+ * The value is an overestimate. */
+#define INT_STRLEN(TYPE) (TYPE_IS_SIGNED(TYPE) + TYPE_VALUE_BITS(TYPE) / 3 + 1)
+
+#endif /* type-props.h */