Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpn / generic / random.c

diff --git a/rts/gmp/mpn/generic/random.c b/rts/gmp/mpn/generic/random.c
new file mode 100644 (file)
index 0000000..dea4e20
--- /dev/null
+++ b/rts/gmp/mpn/generic/random.c
@@ -0,0 +1,43 @@
+/* mpn_random -- Generate random numbers.
+
+Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MP Library 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "urandom.h"
+
+void
+#if __STDC__
+mpn_random (mp_ptr res_ptr, mp_size_t size)
+#else
+mpn_random (res_ptr, size)
+     mp_ptr res_ptr;
+     mp_size_t size;
+#endif
+{
+  mp_size_t i;
+
+  for (i = 0; i < size; i++)
+    res_ptr[i] = urandom ();
+
+  /* Make sure the most significant limb is non-zero.  */
+  while (res_ptr[size - 1] == 0)
+    res_ptr[size - 1] = urandom ();
+}