X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=ChangeLog;h=01dca102a682b0d414fd014130415daa82ca057b;hb=0a47086e94a3077e6f49a6df8cd0a03e0ac88b56;hp=3d4f38d297b594a9d2df96ede0e717a13000996c;hpb=75588b6ed2692b86b760b5390a33d380d642c925;p=gnulib.git

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 2013-10-06  Paul Eggert  <eggert@cs.ucla.edu>
 
+	New module 'count-trailing-zeros'.
+	* MODULES.html.sh: Mention it.
+	* lib/count-trailing-zeros.c, lib/count-trailing-zeros.h:
+	* m4/count-trailing-zeros.m4, modules/count-trailing-zeros:
+	* modules/count-trailing-zeros-tests:
+	* tests/test-count-trailing-zeros.c:
+	New files.
+
+	count-leading-zeros: port to MSC; support types wider than 64 bits
+	The ideas behind the MSC port are stolen from Emacs.
+	* lib/count-leading-zeros.h:
+	Don't include verify.h: it's no longer needed, as types wider than
+	64 bits are now supported.
+	(COUNT_LEADING_ZEROS): New arg MSC_BUILTIN, for better
+	performance with MSC.  All uses changed.  Do not assume that TYPE
+	has at most 64 bits.
+	(count_leading_zeros_32): Assume 0 < X < 2**32, for speed.
+	All uses changed.  Fold the subtraction from 31 into the table.
+
 	count-one-bits: port to MSC; support types wider than 64 bits
 	The ideas behind the MSC port are stolen from Emacs.
 	* lib/count-one-bits.c (popcount_support) [_MSC_VER]: New variable.