1 files changed, 43 insertions, 0 deletions
diff --git a/mpc/src/mul_fr.c b/mpc/src/mul_fr.c
new file mode 100644
index 0000000000..bd3574d857
--- /dev/null
+++ b/mpc/src/mul_fr.c
@@ -0,0 +1,43 @@
+/* mpc_mul_fr -- Multiply a complex number by a floating-point number.
+
+Copyright (C) 2002, 2008, 2009, 2010, 2011 INRIA
+
+This file is part of GNU MPC.
+
+GNU MPC 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 3 of the License, or (at your
+option) any later version.
+
+GNU MPC 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 this program. If not, see http://www.gnu.org/licenses/ .
+*/
+
+#include "mpc-impl.h"
+
+int
+mpc_mul_fr (mpc_ptr a, mpc_srcptr b, mpfr_srcptr c, mpc_rnd_t rnd)
+{
+  int inex_re, inex_im;
+  mpfr_t real;
+
+  if (c == mpc_realref (a))
+    /* We have to use a temporary variable. */
+    mpfr_init2 (real, MPC_PREC_RE (a));
+  else
+    real [0] = mpc_realref (a) [0];
+
+  inex_re = mpfr_mul (real, mpc_realref(b), c, MPC_RND_RE(rnd));
+  inex_im = mpfr_mul (mpc_imagref(a), mpc_imagref(b), c, MPC_RND_IM(rnd));
+  mpfr_set (mpc_realref (a), real, GMP_RNDN); /* exact */
+
+  if (c == mpc_realref (a))
+    mpfr_clear (real);
+
+  return MPC_INEX(inex_re, inex_im);
+}