1 files changed, 143 insertions, 0 deletions
diff --git a/tests/tsinh_cosh.c b/tests/tsinh_cosh.c
new file mode 100644
index 0000000..2b3d6e8
--- /dev/null
+++ b/tests/tsinh_cosh.c
@@ -0,0 +1,143 @@
+/* Test file for mpfr_sinh_cosh.
+
+Copyright 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"
+
+#if MPFR_VERSION >= MPFR_VERSION_NUM(2,4,0)
+
+static void
+failed (mpfr_t x, mpfr_t esh, mpfr_t gsh, mpfr_t ech, mpfr_t gch)
+{
+  printf ("error : mpfr_sinh_cosh (x) x = ");
+  mpfr_out_str (stdout, 10, 0, x, MPFR_RNDD);
+  printf ("\nsinh(x) expected ");
+  mpfr_out_str (stdout, 10, 0, esh, MPFR_RNDD);
+  printf ("\n        got ");
+  mpfr_out_str (stdout, 10, 0, gsh, MPFR_RNDD);
+  printf ("\ncosh(x) expected ");
+  mpfr_out_str (stdout, 10, 0, ech, MPFR_RNDD);
+  printf ("\n        got ");
+  mpfr_out_str (stdout, 10, 0, gch, MPFR_RNDD);
+  putchar ('\n');
+
+  mpfr_clears (x, esh, gsh, ech, gch, (mpfr_ptr) 0);
+  exit (1);
+}
+
+/* check against sinh, cosh */
+static void
+check (mpfr_t x, mpfr_rnd_t rnd)
+{
+  mpfr_t s, c, sx, cx;
+  int isc, is, ic;
+
+  mpfr_inits2 (MPFR_PREC(x), s, c, sx, cx, (mpfr_ptr) 0);
+
+  isc = mpfr_sinh_cosh (sx, cx, x, rnd);
+  is = mpfr_sinh (s, x, rnd);
+  ic = mpfr_cosh (c, x, rnd);
+
+  if (!mpfr_equal_p (s, sx) || !mpfr_equal_p (c, cx))
+    failed (x, s, sx, c, cx);
+  MPFR_ASSERTN (isc = is || ic);
+
+  mpfr_clears (s, c, sx, cx, (mpfr_ptr) 0);
+}
+
+static void
+check_nans (void)
+{
+  mpfr_t  x, sh, ch;
+
+  mpfr_init2 (x, 123);
+  mpfr_init2 (sh, 123);
+  mpfr_init2 (ch, 123);
+
+  /* nan */
+  mpfr_set_nan (x);
+  mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
+  MPFR_ASSERTN (mpfr_nan_p (sh));
+  MPFR_ASSERTN (mpfr_nan_p (ch));
+
+  /* +inf */
+  mpfr_set_inf (x, 1);
+  mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
+  MPFR_ASSERTN (mpfr_inf_p (sh));
+  MPFR_ASSERTN (mpfr_sgn (sh) > 0);
+  MPFR_ASSERTN (mpfr_inf_p (ch));
+  MPFR_ASSERTN (mpfr_sgn (ch) > 0);
+
+  /* -inf */
+  mpfr_set_inf (x, -1);
+  mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
+  MPFR_ASSERTN (mpfr_inf_p (sh));
+  MPFR_ASSERTN (mpfr_sgn (sh) < 0);
+  MPFR_ASSERTN (mpfr_inf_p (ch));
+  MPFR_ASSERTN (mpfr_sgn (ch) > 0);
+
+  mpfr_clear (x);
+  mpfr_clear (sh);
+  mpfr_clear (ch);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int i;
+  mpfr_t x;
+
+  tests_start_mpfr ();
+
+  check_nans ();
+
+  /* check against values given by sinh(x), cosh(x) */
+  mpfr_init2 (x, 53);
+  mpfr_set_str (x, "FEDCBA987654321p-48", 16, MPFR_RNDN);
+  for (i = 0; i < 10; ++i)
+    {
+      /* x = i - x / 2 : boggle sign and bits */
+      mpfr_ui_sub (x, i, x, MPFR_RNDD);
+      mpfr_div_2ui (x, x, 2, MPFR_RNDD);
+
+      check (x, MPFR_RNDN);
+      check (x, MPFR_RNDU);
+      check (x, MPFR_RNDD);
+    }
+  mpfr_clear (x);
+
+  tests_end_mpfr ();
+  return 0;
+}
+
+#else
+
+int
+main (void)
+{
+  printf ("Warning! Test disabled for this MPFR version.\n");
+  return 0;
+}
+
+#endif