From: Jorrit Herder <jnherder@minix3.org>
Date: Mon, 20 Jun 2005 14:29:09 +0000 (+0000)
Subject: New bit map manipulation header.
X-Git-Tag: v3.1.0~719
X-Git-Url: http://zhaoyanbai.com/repos/Bv9ARM.ch03.html?a=commitdiff_plain;h=d78cf7fbafefa9f43a3e4b55b3bef20c4eafa8f5;p=minix.git

New bit map manipulation header.
General purpose.
---

diff --git a/include/minix/bitmap.h b/include/minix/bitmap.h
new file mode 100644
index 000000000..47da1283f
--- /dev/null
+++ b/include/minix/bitmap.h
@@ -0,0 +1,11 @@
+#ifndef _BITMAP_H
+#define _BITMAP_H
+
+/* Bit map operations to manipulate bits of a simple mask variable. */
+#define bit_set(mask, n)	((mask) |= (1 << (n)))
+#define bit_unset(mask, n)	((mask) &= ~(1 << (n)))
+#define bit_isset(mask, n)	((mask) & (1 << (n)))
+#define bit_empty(mask)		((mask) = 0)
+#define bit_fill(mask)		((mask) = ~0)
+
+#endif	/* _BITMAP_H */