Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpz / cmp.c

diff --git a/rts/gmp/mpz/cmp.c b/rts/gmp/mpz/cmp.c
new file mode 100644 (file)
index 0000000..6062834
--- /dev/null
+++ b/rts/gmp/mpz/cmp.c
@@ -0,0 +1,75 @@
+/* mpz_cmp(u,v) -- Compare U, V.  Return postive, zero, or negative
+   based on if U > V, U == V, or U < V.
+
+Copyright (C) 1991, 1993, 1994, 1996 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. */
+
+#ifdef BERKELEY_MP
+#include "mp.h"
+#endif
+#include "gmp.h"
+#include "gmp-impl.h"
+
+#ifndef BERKELEY_MP
+int
+#if __STDC__
+mpz_cmp (mpz_srcptr u, mpz_srcptr v)
+#else
+mpz_cmp (u, v)
+     mpz_srcptr u;
+     mpz_srcptr v;
+#endif
+#else /* BERKELEY_MP */
+int
+#if __STDC__
+mcmp (mpz_srcptr u, mpz_srcptr v)
+#else
+mcmp (u, v)
+     mpz_srcptr u;
+     mpz_srcptr v;
+#endif
+#endif /* BERKELEY_MP */
+{
+  mp_size_t usize = u->_mp_size;
+  mp_size_t vsize = v->_mp_size;
+  mp_size_t size;
+  mp_srcptr up, vp;
+  int cmp;
+
+  if (usize != vsize)
+    return usize - vsize;
+
+  if (usize == 0)
+    return 0;
+
+  size = ABS (usize);
+
+  up = u->_mp_d;
+  vp = v->_mp_d;
+
+  cmp = mpn_cmp (up, vp, size);
+
+  if (cmp == 0)
+    return 0;
+
+  if ((cmp < 0) == (usize < 0))
+    return 1;
+  else
+    return -1;
+}