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@@ -0,0 +1,59 @@
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+
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+ This file is part of the GNU C Library.
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+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu <mailto:drepper@gnu.ai.mit.edu>>, August 1995.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, write to the Free
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+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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+ 02111-1307 USA. */
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+
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+#include <errno.h>
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+#include <stdlib.h>
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+#include <limits.h>
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+#include <stdint.h>
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+#include <sys/types.h>
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+
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+
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+struct drand48_data __libc_drand48_data;
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+
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+
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+int
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+__drand48_iterate (xsubi, buffer)
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+ unsigned short int xsubi[3];
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+ struct drand48_data *buffer;
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+{
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+ uint64_t X;
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+ uint64_t result;
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+
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+
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+ if (unlikely(!buffer->__init))
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+ {
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+ buffer->__a = 0x5deece66dull;
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+ buffer->__c = 0xb;
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+ buffer->__init = 1;
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+ }
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+
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+
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+ 48 bits. Because we compute the modulus it does not care how
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+ many bits really are computed. */
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+
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+ X = (uint64_t) xsubi[2] << 32 | (uint32_t) xsubi[1] << 16 | xsubi[0];
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+
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+ result = X * buffer->__a + buffer->__c;
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+
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+ xsubi[0] = result & 0xffff;
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+ xsubi[1] = (result >> 16) & 0xffff;
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+ xsubi[2] = (result >> 32) & 0xffff;
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+
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+ return 0;
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+}
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