bitflag.h

Revision 918, 1.0 kB (checked in by takkaria, 4 months ago)
Use consistent newlines everywhere, and also set the svn:eol-style property to native on all text files.
Property svn:eol-style set to `native`

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1	/*
2	* File: bitflag.h
3	* Purpose: Manipulating bitflags.
4	*
5	* Copyright (c) 2007 Kenneth Boyd.
6	*
7	* Redistribution and use in source and binary forms, with or without
8	* modification, are permitted provided that the following conditions are met:
9	*
10	* * Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.
12	*
13	* * Redistributions in binary form must reproduce the above copyright notice,
14	* this list of conditions and the following disclaimer in the documentation
15	* and/or other materials provided with the distribution.
16	*/
17
18	/*
19	* alternate flag approach for 32-bit bitvectors
20	*/
21	#define FLAG_FROM_INDEX(F) (1UL << ((F)%32))
22	#define OFFSET_FROM_INDEX(F) ((F)/32)
23	#define TEST_FLAG(A,F) (A[OFFSET_FROM_INDEX(F)] & FLAG_FROM_INDEX(F))
24	#define SET_FLAG(A,F) (A[OFFSET_FROM_INDEX(F)] \|= FLAG_FROM_INDEX(F))
25	#define RESET_FLAG(A,F) (A[OFFSET_FROM_INDEX(F)] &= ~(FLAG_FROM_INDEX(F))

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