patch-2.1.106 linux/include/asm-generic/bitops.h

• Lines: 23
• Date: Sat Jun 13 12:56:46 1998
• Orig file: v2.1.105/linux/include/asm-generic/bitops.h
• Orig date: Mon Aug 15 00:54:22 1994

diff -u --recursive --new-file v2.1.105/linux/include/asm-generic/bitops.h linux/include/asm-generic/bitops.h
@@ -50,4 +50,22 @@
 	mask = 1 << (nr & 0x1f);
 	return ((mask & *addr) != 0);
 }
+
+/*
+ * ffs: find first bit set. This is defined the same way as
+ * the libc and compiler builtin ffs routines, therefore
+ * differs in spirit from the above ffz (man ffs).
+ */
+
+#define ffs(x) generic_ffs(x)
+
+/*
+ * hweightN: returns the hamming weight (i.e. the number
+ * of bits set) of a N-bit word
+ */
+
+#define hweight32(x) generic_hweight32(x)
+#define hweight16(x) generic_hweight16(x)
+#define hweight8(x) generic_hweight8(x)
+
 #endif /* _ASM_GENERIC_BITOPS_H */