* mpfr/*: Update to mpfr cvs 2003-01-18.

1 files changed, 162 insertions, 0 deletions

diff --git a/mpfr/tests/tsin_cos.c b/mpfr/tests/tsin_cos.c
new file mode 100644
index 000000000..582f37aa9
--- /dev/null
+++ b/mpfr/tests/tsin_cos.c
@@ -0,0 +1,162 @@
+/* Test file for mpfr_sin_cos.
+
+Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+This file is part of the MPFR Library.
+
+The 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 2.1 of the License, or (at your
+option) any later version.
+
+The 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 MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "mpfr.h"
+#include "mpfr-impl.h"
+#include "mpfr-test.h"
+
+void large_test _PROTO ((int, int));
+void check53 _PROTO ((double, double, double, mp_rnd_t));
+void check53sin _PROTO ((double, double, mp_rnd_t));
+void check53cos _PROTO ((double, double, mp_rnd_t));
+
+void large_test (int prec, int N)
+{
+  int i;
+  mpfr_t x, s, c;
+
+  mpfr_init2 (x, prec);
+  mpfr_init2 (s, prec);
+  mpfr_init2 (c, prec);
+  mpfr_set_d (x, 3.0, GMP_RNDN);
+  mpfr_sqrt (x, x, GMP_RNDN);
+  for (i=0; i<N; i++) mpfr_sin_cos (s, c, x, GMP_RNDN);
+  mpfr_out_str (stdout, 10, 0, s, GMP_RNDN); putchar('\n');
+  mpfr_clear (x);
+  mpfr_clear (s);
+  mpfr_clear (c);
+}
+
+void check53 (double x, double sin_x, double cos_x, mp_rnd_t rnd_mode)
+{
+  mpfr_t xx, s, c;
+
+  mpfr_init2 (xx, 53);
+  mpfr_init2 (s, 53);
+  mpfr_init2 (c, 53);
+  mpfr_set_d (xx, x, rnd_mode); /* should be exact */
+  mpfr_sin_cos (s, c, xx, rnd_mode);
+  if (mpfr_get_d1 (s) != sin_x && !(Isnan(sin_x) && mpfr_nan_p(s)))
+    {
+      fprintf (stderr, "mpfr_sin_cos failed for x=%1.20e, rnd=%s\n", x,
+               mpfr_print_rnd_mode (rnd_mode));
+      fprintf (stderr, "mpfr_sin_cos gives sin(x)=%1.20e, expected %1.20e\n",
+               mpfr_get_d1 (s), sin_x);
+      exit (1);
+    }
+  if (mpfr_get_d1 (c) != cos_x && !(Isnan(cos_x) && mpfr_nan_p(c)))
+    {
+      fprintf (stderr, "mpfr_sin_cos failed for x=%1.20e, rnd=%s\n", x,
+               mpfr_print_rnd_mode (rnd_mode));
+      fprintf (stderr, "mpfr_sin_cos gives cos(x)=%1.20e, expected %1.20e\n",
+               mpfr_get_d1 (c), cos_x);
+      exit (1);
+    }
+  mpfr_clear (xx);
+  mpfr_clear (s);
+  mpfr_clear (c);
+}
+
+void check53sin (double x, double sin_x, mp_rnd_t rnd_mode)
+{
+  mpfr_t xx, s, c;
+
+  mpfr_init2 (xx, 53);
+  mpfr_init2 (s, 53);
+  mpfr_init2 (c, 53);
+  mpfr_set_d (xx, x, rnd_mode); /* should be exact */
+  mpfr_sin_cos (s, c, xx, rnd_mode);
+  if (mpfr_get_d1 (s) != sin_x && !(Isnan(sin_x) && mpfr_nan_p(s)))
+    {
+      fprintf (stderr, "mpfr_sin_cos failed for x=%1.20e, rnd=%s\n", x,
+               mpfr_print_rnd_mode (rnd_mode));
+      fprintf (stderr, "mpfr_sin_cos gives sin(x)=%1.20e, expected %1.20e\n",
+               mpfr_get_d1 (s), sin_x);
+      exit (1);
+    }
+  mpfr_clear (xx);
+  mpfr_clear (s);
+  mpfr_clear (c);
+}
+
+void check53cos (double x, double cos_x, mp_rnd_t rnd_mode)
+{
+  mpfr_t xx, c, s;
+
+  mpfr_init2 (xx, 53);
+  mpfr_init2 (c, 53);
+  mpfr_init2 (s, 53);
+  mpfr_set_d (xx, x, rnd_mode); /* should be exact */
+  mpfr_sin_cos (s, c, xx, rnd_mode);
+  if (mpfr_get_d1 (c) != cos_x && !(Isnan(cos_x) && mpfr_nan_p(c)))
+    {
+      fprintf (stderr, "mpfr_sin_cos failed for x=%1.20e, rnd=%s\n", x,
+               mpfr_print_rnd_mode (rnd_mode));
+      fprintf (stderr, "mpfr_sin_cos gives cos(x)=%1.20e, expected %1.20e\n",
+               mpfr_get_d1 (c), cos_x);
+      exit (1);
+    }
+  mpfr_clear (xx);
+  mpfr_clear (c);
+  mpfr_clear (s);
+}
+
+/* tsin_cos prec [N] performs N tests with prec bits */
+int
+main(int argc, char *argv[])
+{
+  if (argc > 1)
+    {
+      large_test (atoi (argv[1]), (argc > 2) ? atoi (argv[2]) : 1);
+    }
+
+#ifdef HAVE_INFS
+  check53 (DBL_NAN, DBL_NAN, DBL_NAN, GMP_RNDN);
+  check53 (DBL_POS_INF, DBL_NAN, DBL_NAN, GMP_RNDN);
+  check53 (DBL_NEG_INF, DBL_NAN, DBL_NAN, GMP_RNDN);
+#endif
+  /* worst case from PhD thesis of Vincent Lefe`vre: x=8980155785351021/2^54 */
+  check53 (4.984987858808754279e-1, 4.781075595393330379e-1, 
+	   8.783012931285841817e-1, GMP_RNDN);
+  check53 (4.984987858808754279e-1, 4.781075595393329824e-1,
+	   8.783012931285840707e-1, GMP_RNDD);
+  check53 (4.984987858808754279e-1, 4.781075595393329824e-1,
+	   8.783012931285840707e-1, GMP_RNDZ);
+  check53 (4.984987858808754279e-1, 4.781075595393330379e-1,
+	   8.783012931285841817e-1, GMP_RNDU);
+  check53 (1.00031274099908640274,  8.416399183372403892e-1,
+	   0.540039116973283217504, GMP_RNDN);
+  check53 (1.00229256850978698523,  8.427074524447979442e-1,
+	   0.538371757797526551137, GMP_RNDZ);
+  check53 (1.00288304857059840103,  8.430252033025980029e-1,
+	   0.537874062022526966409, GMP_RNDZ);
+  check53 (1.00591265847407274059,  8.446508805292128885e-1,
+	   0.53531755997839769456,  GMP_RNDN);
+
+  /* check one argument only */
+  check53sin (1.00591265847407274059,  8.446508805292128885e-1, GMP_RNDN);
+  check53cos (1.00591265847407274059, 0.53531755997839769456,  GMP_RNDN);
+
+  return 0;
+}