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-rw-r--r--gnulib/lib/integer_length.h49
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diff --git a/gnulib b/gnulib
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-Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1
diff --git a/gnulib/lib/integer_length.h b/gnulib/lib/integer_length.h
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+/* integer_length - find most significant bit in an unsigned integer.
+ Copyright (C) 2011 Free Software Foundation, Inc.
+
+ 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; either version 3 of the License, or
+ (at your option) any later version.
+
+ 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, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2011. */
+
+#ifndef _INTEGER_LENGTH_H
+#define _INTEGER_LENGTH_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* These functions return the minimum number of bits required to represent
+ the given unsigned integer.
+ For non-zero values, this is the position of the most significant bit
+ that is set, plus one. For zero, it is 0. */
+
+/* Returns the integer length of x.
+ The result is >= 0, <= sizeof (unsigned int) * CHAR_BIT. */
+extern int integer_length (unsigned int x);
+
+/* Returns the integer length of x.
+ The result is >= 0, <= sizeof (unsigned long) * CHAR_BIT. */
+extern int integer_length_l (unsigned long x);
+
+#if HAVE_UNSIGNED_LONG_LONG_INT
+/* Returns the integer length of x.
+ The result is >= 0, <= sizeof (unsigned long long) * CHAR_BIT. */
+extern int integer_length_ll (unsigned long long x);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _INTEGER_LENGTH_H */