Merge with MySQL 5.1.57/58

Moved some BSD string functions from Unireg

1 files changed, 22 insertions, 3 deletions

diff --git a/include/my_bit.h b/include/my_bit.h
index 2e464e89049..266cfa8ff27 100644
--- a/include/my_bit.h
+++ b/include/my_bit.h
@@ -1,3 +1,19 @@
+/* Copyright (c) 2007, 2011, Oracle and/or its affiliates.
+   Copyright (c) 2009-2011, Monty Program Ab
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
 /*
   Some useful bit functions
 */
@@ -42,9 +58,12 @@ STATIC_INLINE uint my_count_bits(ulonglong v)
 #endif
 }
 
-STATIC_INLINE uint my_count_bits_ushort(ushort v)
+STATIC_INLINE uint my_count_bits_uint32(uint32 v)
 {
-  return _my_bits_nbits[v];
+  return (uint) (uchar) (_my_bits_nbits[(uchar)  v] +
+                         _my_bits_nbits[(uchar) (v >> 8)] +
+                         _my_bits_nbits[(uchar) (v >> 16)] +
+                         _my_bits_nbits[(uchar) (v >> 24)]);
 }
 
 
@@ -104,6 +123,6 @@ extern uint32 my_round_up_to_next_power(uint32 v);
 uint32 my_clear_highest_bit(uint32 v);
 uint32 my_reverse_bits(uint32 key);
 extern uint my_count_bits(ulonglong v);
-extern uint my_count_bits_ushort(ushort v);
+extern uint my_count_bits_uint32(uint32 v);
 #endif /* HAVE_INLINE */
 C_MODE_END