diff options
| author | Guy Harris <guy@alum.mit.edu> | 2018-02-19 21:27:03 -0800 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2018-02-20 05:27:38 +0000 |
| commit | dc6b9dfcd635a1ca97a218bcdaf16a2ee5f7b693 (patch) | |
| tree | 49ce29aca0c5cce7f14b06b7bd89d7a1a35614b4 /wsutil | |
| parent | e4787a9190c82dadae7e57c0847e2529bb2a9bbf (diff) | |
Define macros to calculate (2^N)^M, and use them in more places.
Change-Id: I4df1b35d8d2233c301f0ba9e119d012aebe9cd17
Reviewed-on: https://code.wireshark.org/review/25913
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Diffstat (limited to 'wsutil')
| -rw-r--r-- | wsutil/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | wsutil/Makefile.am | 1 | ||||
| -rw-r--r-- | wsutil/pow2.h | 29 |
3 files changed, 31 insertions, 0 deletions
diff --git a/wsutil/CMakeLists.txt b/wsutil/CMakeLists.txt index bb75fd4dfd..c8e685e2da 100644 --- a/wsutil/CMakeLists.txt +++ b/wsutil/CMakeLists.txt @@ -61,6 +61,7 @@ set(WSUTIL_PUBLIC_HEADERS os_version_info.h pint.h plugins.h + pow2.h privileges.h processes.h report_message.h diff --git a/wsutil/Makefile.am b/wsutil/Makefile.am index 008a50110d..0ce957f4ce 100644 --- a/wsutil/Makefile.am +++ b/wsutil/Makefile.am @@ -68,6 +68,7 @@ WSUTIL_PUBLIC_INCLUDES = \ os_version_info.h \ pint.h \ plugins.h \ + pow2.h \ privileges.h \ processes.h \ report_message.h \ diff --git a/wsutil/pow2.h b/wsutil/pow2.h new file mode 100644 index 0000000000..f72b09133e --- /dev/null +++ b/wsutil/pow2.h @@ -0,0 +1,29 @@ +/* ws_pow2.h + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef __WS_POW2_H__ +#define __WS_POW2_H__ + +/* + * Macros to calculate pow2^M, for various power-of-2 values and positive + * integer values of M. That's (2^N)^M, i.e. 2^(N*M). + * + * The first argument is the type of the desired result; the second + * argument is M. + */ +#define pow2(type, m) (((type)1U) << (m)) +#define pow4(type, m) (((type)1U) << (2*(m))) +#define pow8(type, m) (((type)1U) << (3*(m))) +#define pow16(type, m) (((type)1U) << (4*(m))) +#define pow32(type, m) (((type)1U) << (5*(m))) +#define pow64(type, m) (((type)1U) << (6*(m))) +#define pow128(type, m) (((type)1U) << (7*(m))) +#define pow256(type, m) (((type)1U) << (8*(m))) + +#endif /* __WS_POW2_H__ */ |