1 files changed, 134 insertions, 0 deletions
diff --git a/mpc/tests/tcosh.c b/mpc/tests/tcosh.c
new file mode 100644
index 0000000000..57b5601e97
--- /dev/null
+++ b/mpc/tests/tcosh.c
@@ -0,0 +1,134 @@
+/* test file for mpc_cosh.
+
+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 <stdlib.h>
+#include "mpc-tests.h"
+
+static void
+pure_real_argument (void)
+{
+  /* cosh(x -i*0) = cosh(x) +i*0 if x<0 */
+  /* cosh(x -i*0) = cosh(x) -i*0 if x>0 */
+  /* cosh(x +i*0) = cosh(x) -i*0 if x<0 */
+  /* cosh(x -i*0) = cosh(x) +i*0 if x>0 */
+  mpc_t u;
+  mpc_t z;
+  mpc_t cosh_z;
+
+  mpc_init2 (z, 2);
+  mpc_init2 (u, 100);
+  mpc_init2 (cosh_z, 100);
+
+  /* cosh(1 +i*0) = cosh(1) +i*0 */
+  mpc_set_ui_ui (z, 1, 0, MPC_RNDNN);
+  mpfr_cosh (mpc_realref (u), mpc_realref (z), GMP_RNDN);
+  mpfr_set_ui (mpc_imagref (u), 0, GMP_RNDN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  /* cosh(1 -i*0) = cosh(1) -i*0 */
+  mpc_conj (z, z, MPC_RNDNN);
+  mpc_conj (u, u, MPC_RNDNN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || !mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  /* cosh(-1 +i*0) = cosh(1) -i*0 */
+  mpc_neg (z, z, MPC_RNDNN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || !mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  /* cosh(-1 -i*0) = cosh(1) +i*0 */
+  mpc_conj (z, z, MPC_RNDNN);
+  mpc_conj (u, u, MPC_RNDNN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  mpc_clear (cosh_z);
+  mpc_clear (z);
+  mpc_clear (u);
+}
+
+static void
+pure_imaginary_argument (void)
+{
+  /* cosh(+0 +i*y) = cos y +i*0*sin y */
+  /* cosh(-0 +i*y) = cos y -i*0*sin y */
+  mpc_t u;
+  mpc_t z;
+  mpc_t cosh_z;
+
+  mpc_init2 (z, 2);
+  mpc_init2 (u, 100);
+  mpc_init2 (cosh_z, 100);
+
+  /* cosh(+0 +i) = cos(1) + i*0 */
+  mpc_set_ui_ui (z, 0, 1, MPC_RNDNN);
+  mpfr_cos (mpc_realref (u), mpc_imagref (z), GMP_RNDN);
+  mpfr_set_ui (mpc_imagref (u), 0, GMP_RNDN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  /* cosh(+0 -i) = cos(1) - i*0 */
+  mpc_conj (z, z, MPC_RNDNN);
+  mpc_conj (u, u, MPC_RNDNN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || !mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  /* cosh(-0 +i) = cos(1) - i*0 */
+  mpc_neg (z, z, MPC_RNDNN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || !mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  /* cosh(-0 -i) = cos(1) + i*0 */
+  mpc_conj (z, z, MPC_RNDNN);
+  mpc_conj (u, u, MPC_RNDNN);
+  mpc_cosh (cosh_z, z, MPC_RNDNN);
+  if (mpc_cmp (cosh_z, u) != 0 || mpfr_signbit (mpc_imagref (cosh_z)))
+    TEST_FAILED ("mpc_cosh", z, cosh_z, u, MPC_RNDNN);
+
+  mpc_clear (cosh_z);
+  mpc_clear (z);
+  mpc_clear (u);
+}
+
+int
+main (void)
+{
+  DECL_FUNC(CC, f,mpc_cosh);
+
+  test_start ();
+
+  data_check (f, "cosh.dat");
+  tgeneric (f, 2, 512, 7, 7);
+
+  pure_real_argument ();
+  pure_imaginary_argument ();
+
+  test_end ();
+
+  return 0;
+}