Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / lib / mpi / mpi-cmp.c

diff --git a/kernel/lib/mpi/mpi-cmp.c b/kernel/lib/mpi/mpi-cmp.c
new file mode 100644 (file)
index 0000000..d25e9e9
--- /dev/null
+++ b/kernel/lib/mpi/mpi-cmp.c
@@ -0,0 +1,68 @@
+/* mpi-cmp.c  -  MPI functions
+ * Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "mpi-internal.h"
+
+int mpi_cmp_ui(MPI u, unsigned long v)
+{
+       mpi_limb_t limb = v;
+
+       mpi_normalize(u);
+       if (!u->nlimbs && !limb)
+               return 0;
+       if (u->sign)
+               return -1;
+       if (u->nlimbs > 1)
+               return 1;
+
+       if (u->d[0] == limb)
+               return 0;
+       else if (u->d[0] > limb)
+               return 1;
+       else
+               return -1;
+}
+EXPORT_SYMBOL_GPL(mpi_cmp_ui);
+
+int mpi_cmp(MPI u, MPI v)
+{
+       mpi_size_t usize, vsize;
+       int cmp;
+
+       mpi_normalize(u);
+       mpi_normalize(v);
+       usize = u->nlimbs;
+       vsize = v->nlimbs;
+       if (!u->sign && v->sign)
+               return 1;
+       if (u->sign && !v->sign)
+               return -1;
+       if (usize != vsize && !u->sign && !v->sign)
+               return usize - vsize;
+       if (usize != vsize && u->sign && v->sign)
+               return vsize - usize;
+       if (!usize)
+               return 0;
+       cmp = mpihelp_cmp(u->d, v->d, usize);
+       if (u->sign)
+               return -cmp;
+       return cmp;
+}
+EXPORT_SYMBOL_GPL(mpi_cmp);