1 files changed, 110 insertions, 0 deletions
diff --git a/tests/tcsch.c b/tests/tcsch.c
new file mode 100644
index 0000000..7bb4354
--- /dev/null
+++ b/tests/tcsch.c
@@ -0,0 +1,110 @@
+/* Test file for mpfr_csch.
+
+Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
+Contributed by the AriC and Caramel projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR 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 3 of the License, or (at your
+option) any later version.
+
+The GNU MPFR 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 GNU MPFR Library; see the file COPYING.LESSER.  If not, see
+http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+#define TEST_FUNCTION mpfr_csch
+#define TEST_RANDOM_EMAX 63
+#include "tgeneric.c"
+
+static void
+check_specials (void)
+{
+  mpfr_t  x, y;
+
+  mpfr_init2 (x, 123L);
+  mpfr_init2 (y, 123L);
+
+  mpfr_set_nan (x);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! mpfr_nan_p (y))
+    {
+      printf ("Error: csch(NaN) != NaN\n");
+      exit (1);
+    }
+
+  mpfr_set_inf (x, 1);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! (mpfr_zero_p (y) && MPFR_SIGN (y) >0))
+    {
+      printf ("Error: csch(+Inf) != +0\n");
+      exit (1);
+    }
+
+  mpfr_set_inf (x, -1);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! (mpfr_zero_p (y) && MPFR_SIGN (y) <0))
+    {
+      printf ("Error: csch(-0) != -0\n");
+      exit (1);
+    }
+
+  /* csc(+/-0) = +/-Inf */
+  mpfr_set_ui (x, 0, MPFR_RNDN);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! (mpfr_inf_p (y) && mpfr_sgn (y) > 0))
+    {
+      printf ("Error: csch(+0) != +Inf\n");
+      exit (1);
+    }
+  mpfr_neg (x, x, MPFR_RNDN);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! (mpfr_inf_p (y) && mpfr_sgn (y) < 0))
+    {
+      printf ("Error: csch(-0) != -Inf\n");
+      exit (1);
+    }
+
+  /* check huge x */
+  mpfr_set_str (x, "8e8", 10, MPFR_RNDN);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! (mpfr_zero_p (y) && MPFR_SIGN (y) > 0))
+    {
+      printf ("Error: csch(8e8) != +0\n");
+      exit (1);
+    }
+  mpfr_set_str (x, "-8e8", 10, MPFR_RNDN);
+  mpfr_csch (y, x, MPFR_RNDN);
+  if (! (mpfr_zero_p (y) && MPFR_SIGN (y) < 0))
+    {
+      printf ("Error: csch(-8e8) != -0\n");
+      exit (1);
+    }
+
+  mpfr_clear (x);
+  mpfr_clear (y);
+}
+
+int
+main (int argc, char *argv[])
+{
+  tests_start_mpfr ();
+
+  check_specials ();
+  test_generic (2, 200, 10);
+
+  tests_end_mpfr ();
+  return 0;
+}