+++ /dev/null
-/*
- * Mesa 3-D graphics library
- * Version: 6.5
- *
- * Copyright (C) 2006 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/**
- * \file bitset.h
- * \brief Bitset of arbitrary size definitions.
- * \author Michal Krol
- */
-
-#ifndef BITSET_H
-#define BITSET_H
-
-#include "imports.h"
-
-/****************************************************************************
- * generic bitset implementation
- */
-
-#define BITSET_WORD GLuint
-#define BITSET_WORDBITS (sizeof (BITSET_WORD) * 8)
-
-/* bitset declarations
- */
-#define BITSET_DECLARE(name, size) \
- BITSET_WORD name[((size) + BITSET_WORDBITS - 1) / BITSET_WORDBITS]
-
-/* bitset operations
- */
-#define BITSET_COPY(x, y) memcpy( (x), (y), sizeof (x) )
-#define BITSET_EQUAL(x, y) (memcmp( (x), (y), sizeof (x) ) == 0)
-#define BITSET_ZERO(x) memset( (x), 0, sizeof (x) )
-#define BITSET_ONES(x) memset( (x), 0xff, sizeof (x) )
-
-#define BITSET_BITWORD(b) ((b) / BITSET_WORDBITS)
-#define BITSET_BIT(b) (1 << ((b) % BITSET_WORDBITS))
-
-/* single bit operations
- */
-#define BITSET_TEST(x, b) ((x)[BITSET_BITWORD(b)] & BITSET_BIT(b))
-#define BITSET_SET(x, b) ((x)[BITSET_BITWORD(b)] |= BITSET_BIT(b))
-#define BITSET_CLEAR(x, b) ((x)[BITSET_BITWORD(b)] &= ~BITSET_BIT(b))
-
-#define BITSET_MASK(b) ((b) == BITSET_WORDBITS ? ~0 : BITSET_BIT(b) - 1)
-#define BITSET_RANGE(b, e) (BITSET_MASK((e) + 1) & ~BITSET_MASK(b))
-
-/* bit range operations
- */
-#define BITSET_TEST_RANGE(x, b, e) \
- (BITSET_BITWORD(b) == BITSET_BITWORD(e) ? \
- ((x)[BITSET_BITWORD(b)] & BITSET_RANGE(b, e)) : \
- (assert (!"BITSET_TEST_RANGE: bit range crosses word boundary"), 0))
-#define BITSET_SET_RANGE(x, b, e) \
- (BITSET_BITWORD(b) == BITSET_BITWORD(e) ? \
- ((x)[BITSET_BITWORD(b)] |= BITSET_RANGE(b, e)) : \
- (assert (!"BITSET_SET_RANGE: bit range crosses word boundary"), 0))
-#define BITSET_CLEAR_RANGE(x, b, e) \
- (BITSET_BITWORD(b) == BITSET_BITWORD(e) ? \
- ((x)[BITSET_BITWORD(b)] &= ~BITSET_RANGE(b, e)) : \
- (assert (!"BITSET_CLEAR_RANGE: bit range crosses word boundary"), 0))
-
-/* Get first bit set in a bitset.
- */
-static inline int
-__bitset_ffs(const BITSET_WORD *x, int n)
-{
- int i;
-
- for (i = 0; i < n; i++) {
- if (x[i])
- return _mesa_ffs(x[i]) + BITSET_WORDBITS * i;
- }
-
- return 0;
-}
-
-#define BITSET_FFS(x) __bitset_ffs(x, Elements(x))
-
-/****************************************************************************
- * 64-bit bitset implementation
- */
-
-#define BITSET64_WORD GLuint
-#define BITSET64_WORDBITS (sizeof (BITSET64_WORD) * 8)
-
-/* bitset declarations
- */
-#define BITSET64_DECLARE(name, size) \
- GLuint name[2]
-
-/* bitset operations
- */
-#define BITSET64_COPY(x, y) do { (x)[0] = (y)[0]; (x)[1] = (y)[1]; } while (0)
-#define BITSET64_EQUAL(x, y) ( (x)[0] == (y)[0] && (x)[1] == (y)[1] )
-#define BITSET64_ZERO(x) do { (x)[0] = 0; (x)[1] = 0; } while (0)
-#define BITSET64_ONES(x) do { (x)[0] = 0xFF; (x)[1] = 0xFF; } while (0)
-
-#define BITSET64_BITWORD(b) ((b) / BITSET64_WORDBITS)
-#define BITSET64_BIT(b) (1 << ((b) % BITSET64_WORDBITS))
-
-/* single bit operations
- */
-#define BITSET64_TEST(x, b) ((x)[BITSET64_BITWORD(b)] & BITSET64_BIT(b))
-#define BITSET64_SET(x, b) ((x)[BITSET64_BITWORD(b)] |= BITSET64_BIT(b))
-#define BITSET64_CLEAR(x, b) ((x)[BITSET64_BITWORD(b)] &= ~BITSET64_BIT(b))
-
-#define BITSET64_MASK(b) ((b) == BITSET64_WORDBITS ? ~0 : BITSET64_BIT(b) - 1)
-#define BITSET64_RANGE(b, e) (BITSET64_MASK((e) + 1) & ~BITSET64_MASK(b))
-
-/* bit range operations
- */
-#define BITSET64_TEST_SUBRANGE(x, b, e) \
- (BITSET64_BITWORD(b) == BITSET64_BITWORD(e) ? \
- ((x)[BITSET64_BITWORD(b)] & BITSET64_RANGE(b, e)) : \
- (assert (!"BITSET64_TEST_RANGE: bit range crosses word boundary"), 0))
-#define BITSET64_TEST_RANGE(x, b, e) \
- (BITSET64_BITWORD(b) == BITSET64_BITWORD(e) ? \
- (BITSET64_TEST_SUBRANGE(x, b, e)) : \
- (BITSET64_TEST_SUBRANGE(x, b, BITSET64_WORDBITS - 1) | \
- BITSET64_TEST_SUBRANGE(x, BITSET64_WORDBITS, e)))
-#define BITSET64_SET_SUBRANGE(x, b, e) \
- (BITSET64_BITWORD(b) == BITSET64_BITWORD(e) ? \
- ((x)[BITSET64_BITWORD(b)] |= BITSET64_RANGE(b, e)) : \
- (assert (!"BITSET64_SET_RANGE: bit range crosses word boundary"), 0))
-#define BITSET64_SET_RANGE(x, b, e) \
- (BITSET64_BITWORD(b) == BITSET64_BITWORD(e) ? \
- (BITSET64_SET_SUBRANGE(x, b, e)) : \
- (BITSET64_SET_SUBRANGE(x, b, BITSET64_WORDBITS - 1) | \
- BITSET64_SET_SUBRANGE(x, BITSET64_WORDBITS, e)))
-#define BITSET64_CLEAR_SUBRANGE(x, b, e) \
- (BITSET64_BITWORD(b) == BITSET64_BITWORD(e) ? \
- ((x)[BITSET64_BITWORD(b)] &= ~BITSET64_RANGE(b, e)) : \
- (assert (!"BITSET64_CLEAR_RANGE: bit range crosses word boundary"), 0))
-#define BITSET64_CLEAR_RANGE(x, b, e) \
- (BITSET64_BITWORD(b) == BITSET64_BITWORD(e) ? \
- (BITSET64_CLEAR_SUBRANGE(x, b, e)) : \
- (BITSET64_CLEAR_SUBRANGE(x, b, BITSET64_WORDBITS - 1) | \
- BITSET64_CLEAR_SUBRANGE(x, BITSET64_WORDBITS, e)))
-
-#endif
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