diff options
| author | Marc G. Fournier | 1996-07-09 06:22:35 +0000 |
|---|---|---|
| committer | Marc G. Fournier | 1996-07-09 06:22:35 +0000 |
| commit | 24a952fe4a27c6c66dc46ee3b2d860755fe063e1 (patch) | |
| tree | 9c669cd24c4dbcf57f03c278f3169dcb971a2151 /src/backend/utils/bit.h | |
Postgres95 1.01 Distribution - Virgin SourcesPG95_DIST
Diffstat (limited to 'src/backend/utils/bit.h')
| -rw-r--r-- | src/backend/utils/bit.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/backend/utils/bit.h b/src/backend/utils/bit.h new file mode 100644 index 0000000000..8ea701a515 --- /dev/null +++ b/src/backend/utils/bit.h @@ -0,0 +1,39 @@ +/*------------------------------------------------------------------------- + * + * bit.h-- + * Standard bit array definitions. + * + * + * Copyright (c) 1994, Regents of the University of California + * + * $Id$ + * + *------------------------------------------------------------------------- + */ +#ifndef BIT_H +#define BIT_H + +typedef bits8 *BitArray; +typedef uint32 BitIndex; + +#define BitsPerByte 8 + +/* + * BitArraySetBit -- + * Sets (to 1) the value of a bit in a bit array. + */ +extern void BitArraySetBit(BitArray bitArray, BitIndex bitIndex); + +/* + * BitArrayClearBit -- + * Clears (to 0) the value of a bit in a bit array. + */ +extern void BitArrayClearBit(BitArray bitArray, BitIndex bitIndex); + +/* + * BitArrayBitIsSet -- + * True iff the bit is set (1) in a bit array. + */ +extern bool BitArrayBitIsSet(BitArray bitArray, BitIndex bitIndex); + +#endif /* BIT_H */ |