[project @ 1998-06-05 14:38:04 by simonm]

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

diff --git a/ghc/rts/gmp/mpz/set_si.c b/ghc/rts/gmp/mpz/set_si.c
new file mode 100644 (file)
index 0000000..82a90a3
--- /dev/null
+++ b/ghc/rts/gmp/mpz/set_si.c
@@ -0,0 +1,48 @@
+/* mpz_set_si(integer, val) -- Assign INTEGER with a small value VAL.
+
+Copyright (C) 1991, 1993, 1994, 1995 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 Library General Public License as published by
+the Free Software Foundation; either version 2 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library 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"
+
+void
+#if __STDC__
+mpz_set_si (mpz_ptr dest, signed long int val)
+#else
+mpz_set_si (dest, val)
+     mpz_ptr dest;
+     signed long int val;
+#endif
+{
+  /* We don't check if the allocation is enough, since the rest of the
+     package ensures it's at least 1, which is what we need here.  */
+  if (val > 0)
+    {
+      dest->_mp_d[0] = val;
+      dest->_mp_size = 1;
+    }
+  else if (val < 0)
+    {
+      dest->_mp_d[0] = -val;
+      dest->_mp_size = -1;
+    }
+  else
+    dest->_mp_size = 0;
+}