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

• Lines: 25
• Date: Sat Jun 13 12:56:46 1998
• Orig file: v2.1.105/linux/include/asm-sparc/bitops.h
• Orig date: Thu Apr 23 20:21:38 1998

diff -u --recursive --new-file v2.1.105/linux/include/asm-sparc/bitops.h linux/include/asm-sparc/bitops.h
@@ -182,6 +182,24 @@
 	return result;
 }
 
+/*
+ * 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)
+
+
 /* find_next_zero_bit() finds the first zero bit in a bit string of length
  * 'size' bits, starting the search at bit 'offset'. This is largely based
  * on Linus's ALPHA routines, which are pretty portable BTW.