From 90258fdadace50db3ef72a46aa84e9004c7cb61a Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Tue, 16 Apr 2013 00:06:18 +0200 Subject: fix binary logarithm MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- pure-java/SHA3.java | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'pure-java') diff --git a/pure-java/SHA3.java b/pure-java/SHA3.java index 0568b1f..6253094 100644 --- a/pure-java/SHA3.java +++ b/pure-java/SHA3.java @@ -150,10 +150,12 @@ public class SHA3 */ private static int lb(int x) { - return (((x & 0xFF00) == 0 ? 0 : 8) + - ((x & 0xF0F0) == 0 ? 0 : 4)) + - (((x & 0xCCCC) == 0 ? 0 : 2) + - ((x & 0xAAAA) == 0 ? 0 : 1)); + int rc = 0; + if ((x & 0xFF00) != 0) { rc += 8; x >>= 8; } + if ((x & 0x00F0) != 0) { rc += 4; x >>= 4; } + if ((x & 0x000C) != 0) { rc += 2; x >>= 2; } + if ((x & 0x0002) != 0) rc += 1; + return rc; } /** -- cgit v1.2.3-70-g09d2