summaryrefslogtreecommitdiff
path: root/src/ui_div.c
diff options
context:
space:
mode:
authorthevenyp <thevenyp@211d60ee-9f03-0410-a15a-8952a2c7a4e4>2008-04-09 10:47:19 +0000
committerthevenyp <thevenyp@211d60ee-9f03-0410-a15a-8952a2c7a4e4>2008-04-09 10:47:19 +0000
commit08edcef1c32fdc936f0b2a1e3d49317513145887 (patch)
tree7c77abc85f4e757e2bd3a02fe41557744a990565 /src/ui_div.c
parentafea999b442052808beb14b22f17252e67a2da8c (diff)
downloadmpc-08edcef1c32fdc936f0b2a1e3d49317513145887.tar.gz
File reorganisation into three new directories: src, tests and doc.
git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@82 211d60ee-9f03-0410-a15a-8952a2c7a4e4
Diffstat (limited to 'src/ui_div.c')
-rw-r--r--src/ui_div.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/src/ui_div.c b/src/ui_div.c
new file mode 100644
index 0000000..474deb0
--- /dev/null
+++ b/src/ui_div.c
@@ -0,0 +1,50 @@
+/* mpc_ui_div -- Divide an unsigned long int by a complex number.
+
+Copyright (C) 2002 Andreas Enge, Paul Zimmermann
+
+This file is part of the MPC Library.
+
+The MPC 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 MPC 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 MPC 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 <limits.h>
+#include "gmp.h"
+#include "mpfr.h"
+#include "mpc.h"
+#include "mpc-impl.h"
+
+int
+mpc_ui_div (mpc_ptr a, unsigned long int b, mpc_srcptr c, mpc_rnd_t rnd)
+{
+ int inex;
+ mpc_t bb;
+
+ if (mpfr_cmp_ui (MPC_IM(c), 0) == 0) /* c is real */
+ {
+ inex = mpfr_ui_div (MPC_RE(a), b, MPC_RE(c), MPC_RND_RE(rnd));
+ mpfr_set_ui (MPC_IM(a), 0, MPC_RND_IM(rnd));
+ return MPC_INEX(inex, 0);
+ }
+
+ mpc_init2 (bb, sizeof(unsigned long int) * CHAR_BIT);
+
+ mpc_set_ui (bb, b, rnd); /* exact */
+
+ inex = mpc_div (a, bb, c, rnd);
+
+ mpc_clear (bb);
+
+ return inex;
+}