1 files changed, 96 insertions, 0 deletions
diff --git a/mpc/tests/tmul_i.c b/mpc/tests/tmul_i.c
new file mode 100644
index 0000000000..3cde4acf59
--- /dev/null
+++ b/mpc/tests/tmul_i.c
@@ -0,0 +1,96 @@
+/* tmul_i -- test file for mpc_mul_i.
+
+Copyright (C)  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-tests.h"
+
+static void
+check_different_precisions(void)
+{
+  /* check reuse when real and imaginary part have different precisions. */
+  mpc_t z, expected, got;
+  int res;
+
+  mpc_init2(z, 128);
+  mpc_init2(expected, 128);
+  mpc_init2(got, 128);
+
+  /* change precision of one part */
+  mpfr_set_prec (mpc_imagref (z), 32);
+  mpfr_set_prec (mpc_imagref (expected), 32);
+  mpfr_set_prec (mpc_imagref (got), 32);
+
+  mpfr_set_str (mpc_realref (z), "0x100000000fp-32", 16, GMP_RNDN);
+  mpfr_set_str (mpc_imagref (z), "-1", 2, GMP_RNDN);
+  mpfr_set_str (mpc_realref (expected), "+1", 2, GMP_RNDN);
+  mpfr_set_str (mpc_imagref (expected), "0x100000000fp-32", 16, GMP_RNDN);
+
+  mpc_set (got, z, MPC_RNDNN);
+  res = mpc_mul_i (got, got, +1, MPC_RNDNN);
+  if (MPC_INEX_RE(res) != 0 || MPC_INEX_IM(res) >=0)
+    {
+      printf("Wrong inexact flag for mpc_mul_i(z, z, n)\n"
+             "     got (re=%2d, im=%2d)\nexpected (re= 0, im=-1)\n",
+             MPC_INEX_RE(res), MPC_INEX_IM(res));
+      exit(1);
+    }
+  if (mpc_cmp(got, expected) != 0)
+    {
+      printf ("Error for mpc_mul_i(z, z, n) for\n");
+      MPC_OUT (z);
+      printf ("n=+1\n");
+      MPC_OUT (expected);
+      MPC_OUT (got);
+
+      exit (1);
+    }
+
+  mpc_neg (expected, expected, MPC_RNDNN);
+  mpc_set (got, z, MPC_RNDNN);
+  mpc_mul_i (got, got, -1, MPC_RNDNN);
+  if (mpc_cmp(got, expected) != 0)
+    {
+      printf ("Error for mpc_mul_i(z, z, n) for\n");
+      MPC_OUT (z);
+      printf ("n=-1\n");
+      MPC_OUT (expected);
+      MPC_OUT (got);
+
+      exit (1);
+    }
+
+  mpc_clear (z);
+  mpc_clear (expected);
+  mpc_clear (got);
+}
+
+int
+main (void)
+{
+  DECL_FUNC (CCI, f, mpc_mul_i);
+
+  test_start ();
+
+  check_different_precisions ();
+  tgeneric (f, 2, 1024, 7, -1);
+
+  test_end ();
+
+  return 0;
+}