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 00000000000..c817d7b69b0
--- /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: bit.h,v 1.1.1.1 1996/07/09 06:22:01 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#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 */