30 lines
876 B
C
30 lines
876 B
C
/* ws_pow2.h
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __WS_POW2_H__
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#define __WS_POW2_H__
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/*
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* Macros to calculate pow2^M, for various power-of-2 values and positive
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* integer values of M. That's (2^N)^M, i.e. 2^(N*M).
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*
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* The first argument is the type of the desired result; the second
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* argument is M.
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*/
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#define pow2(type, m) (((type)1U) << (m))
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#define pow4(type, m) (((type)1U) << (2*(m)))
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#define pow8(type, m) (((type)1U) << (3*(m)))
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#define pow16(type, m) (((type)1U) << (4*(m)))
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#define pow32(type, m) (((type)1U) << (5*(m)))
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#define pow64(type, m) (((type)1U) << (6*(m)))
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#define pow128(type, m) (((type)1U) << (7*(m)))
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#define pow256(type, m) (((type)1U) << (8*(m)))
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#endif /* __WS_POW2_H__ */
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