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author | thevenyp <thevenyp@211d60ee-9f03-0410-a15a-8952a2c7a4e4> | 2008-04-09 10:47:19 +0000 |
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committer | thevenyp <thevenyp@211d60ee-9f03-0410-a15a-8952a2c7a4e4> | 2008-04-09 10:47:19 +0000 |
commit | 08edcef1c32fdc936f0b2a1e3d49317513145887 (patch) | |
tree | 7c77abc85f4e757e2bd3a02fe41557744a990565 /src/ui_div.c | |
parent | afea999b442052808beb14b22f17252e67a2da8c (diff) | |
download | mpc-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.c | 50 |
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; +} |