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56 lines
1.8 KiB
56 lines
1.8 KiB
/* |
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* Copyright (c) 2015 Damien Miller <djm@mindrot.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifndef _BITMAP_H |
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#define _BITMAP_H |
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#include <sys/types.h> |
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/* Simple bit vector routines */ |
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struct bitmap; |
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/* Allocate a new bitmap. Returns NULL on allocation failure. */ |
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struct bitmap *bitmap_new(void); |
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/* Free a bitmap */ |
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void bitmap_free(struct bitmap *b); |
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/* Zero an existing bitmap */ |
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void bitmap_zero(struct bitmap *b); |
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/* Test whether a bit is set in a bitmap. */ |
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int bitmap_test_bit(struct bitmap *b, u_int n); |
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/* Set a bit in a bitmap. Returns 0 on success or -1 on error */ |
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int bitmap_set_bit(struct bitmap *b, u_int n); |
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/* Clear a bit in a bitmap */ |
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void bitmap_clear_bit(struct bitmap *b, u_int n); |
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/* Return the number of bits in a bitmap (i.e. the position of the MSB) */ |
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size_t bitmap_nbits(struct bitmap *b); |
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/* Return the number of bytes needed to represent a bitmap */ |
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size_t bitmap_nbytes(struct bitmap *b); |
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/* Convert a bitmap to a big endian byte string */ |
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int bitmap_to_string(struct bitmap *b, void *p, size_t l); |
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/* Convert a big endian byte string to a bitmap */ |
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int bitmap_from_string(struct bitmap *b, const void *p, size_t l); |
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#endif /* _BITMAP_H */
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