--- /dev/null
+/* Test file for mpfr_const_euler.
+
+Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao 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 2.1 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.LIB. If not, 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"
+
+/* Wrapper for tgeneric */
+static int
+my_const_euler (mpfr_ptr x, mpfr_srcptr y, mp_rnd_t r)
+{
+ return mpfr_const_euler (x, r);
+}
+
+#define RAND_FUNCTION(x) mpfr_set_ui ((x), 0, GMP_RNDN)
+#define TEST_FUNCTION my_const_euler
+#include "tgeneric.c"
+
+int
+main (int argc, char *argv[])
+{
+ mpfr_t gamma, y, z, t;
+ unsigned int err, prec, yprec, p0 = 2, p1 = 200;
+ int rnd;
+
+ tests_start_mpfr ();
+
+ prec = (argc < 2) ? 53 : atoi(argv[1]);
+
+ if (argc > 1)
+ {
+ mpfr_init2 (gamma, prec);
+ mpfr_const_euler (gamma, GMP_RNDN);
+ printf("gamma="); mpfr_out_str (stdout, 10, 0, gamma, GMP_RNDD);
+ puts ("");
+ mpfr_clear (gamma);
+ return 0;
+ }
+
+ mpfr_init (y);
+ mpfr_init (z);
+ mpfr_init (t);
+
+ mpfr_set_prec (y, 32);
+ mpfr_set_prec (z, 32);
+ (mpfr_const_euler) (y, GMP_RNDN);
+ mpfr_set_str_binary (z, "0.10010011110001000110011111100011");
+ if (mpfr_cmp (y, z))
+ {
+ printf ("Error for prec=32\n");
+ exit (1);
+ }
+
+ for (prec = p0; prec <= p1; prec++)
+ {
+ mpfr_set_prec (z, prec);
+ mpfr_set_prec (t, prec);
+ yprec = prec + 10;
+
+ for (rnd = 0; rnd < GMP_RND_MAX; rnd++)
+ {
+ mpfr_set_prec (y, yprec);
+ mpfr_const_euler (y, (mp_rnd_t) rnd);
+ err = (rnd == GMP_RNDN) ? yprec + 1 : yprec;
+ if (mpfr_can_round (y, err, (mp_rnd_t) rnd, (mp_rnd_t) rnd, prec))
+ {
+ mpfr_set (t, y, (mp_rnd_t) rnd);
+ mpfr_const_euler (z, (mp_rnd_t) rnd);
+ if (mpfr_cmp (t, z))
+ {
+ printf ("results differ for prec=%u rnd_mode=%s\n", prec,
+ mpfr_print_rnd_mode ((mp_rnd_t) rnd));
+ printf (" got ");
+ mpfr_out_str (stdout, 2, prec, z, GMP_RNDN);
+ puts ("");
+ printf (" expected ");
+ mpfr_out_str (stdout, 2, prec, t, GMP_RNDN);
+ puts ("");
+ printf (" approximation was ");
+ mpfr_print_binary (y);
+ puts ("");
+ exit (1);
+ }
+ }
+ }
+ }
+
+ mpfr_clear (y);
+ mpfr_clear (z);
+ mpfr_clear (t);
+
+ test_generic (2, 200, 1);
+
+ tests_end_mpfr ();
+ return 0;
+}