Campbell Barton
e12c08e8d1
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70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2012 by Nicholas Bishop
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* All rights reserved.
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*/
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/** \file
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* \ingroup bli
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*
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* Utility functions for variable size bitmasks.
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*/
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#include <string.h>
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#include <limits.h>
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#include "BLI_utildefines.h"
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#include "BLI_bitmap.h"
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/** Set or clear all bits in the bitmap. */
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void BLI_bitmap_set_all(BLI_bitmap *bitmap, bool set, size_t bits)
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{
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memset(bitmap, set ? UCHAR_MAX : 0, BLI_BITMAP_SIZE(bits));
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}
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/** Invert all bits in the bitmap. */
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void BLI_bitmap_flip_all(BLI_bitmap *bitmap, size_t bits)
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{
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size_t num_blocks = _BITMAP_NUM_BLOCKS(bits);
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for (size_t i = 0; i < num_blocks; i++) {
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bitmap[i] ^= ~(BLI_bitmap)0;
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}
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}
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/** Copy all bits from one bitmap to another. */
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void BLI_bitmap_copy_all(BLI_bitmap *dst, const BLI_bitmap *src, size_t bits)
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{
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memcpy(dst, src, BLI_BITMAP_SIZE(bits));
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}
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/** Combine two bitmaps with boolean AND. */
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void BLI_bitmap_and_all(BLI_bitmap *dst, const BLI_bitmap *src, size_t bits)
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{
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size_t num_blocks = _BITMAP_NUM_BLOCKS(bits);
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for (size_t i = 0; i < num_blocks; i++) {
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dst[i] &= src[i];
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}
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}
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/** Combine two bitmaps with boolean OR. */
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void BLI_bitmap_or_all(BLI_bitmap *dst, const BLI_bitmap *src, size_t bits)
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{
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size_t num_blocks = _BITMAP_NUM_BLOCKS(bits);
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for (size_t i = 0; i < num_blocks; i++) {
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dst[i] |= src[i];
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}
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}
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