[project @ 1996-01-08 20:28:12 by partain]

[ghc-hetmet.git] / ghc / runtime / gmp / mpz_get_si.c

diff --git a/ghc/runtime/gmp/mpz_get_si.c b/ghc/runtime/gmp/mpz_get_si.c
new file mode 100644 (file)
index 0000000..9cddf4b
--- /dev/null
+++ b/ghc/runtime/gmp/mpz_get_si.c
@@ -0,0 +1,40 @@
+/* mpz_get_si(integer) -- Return the least significant digit from INTEGER.
+
+Copyright (C) 1991 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 General Public License as published by
+the Free Software Foundation; either version 2, 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU MP Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+signed long int
+#ifdef __STDC__
+mpz_get_si (const MP_INT *integer)
+#else
+mpz_get_si (integer)
+     const MP_INT *integer;
+#endif
+{
+  mp_size size = integer->size;
+
+  if (size > 0)
+    return integer->d[0] % ((mp_limb) 1 << (BITS_PER_MP_LIMB - 1));
+  else if (size < 0)
+    return -(integer->d[0] % ((mp_limb) 1 << (BITS_PER_MP_LIMB - 1)));
+  else
+    return 0;
+}