Initial commit.

1 files changed, 80 insertions, 0 deletions

diff --git a/gmp-6.3.0/tests/mpz/t-get_d.c b/gmp-6.3.0/tests/mpz/t-get_d.c
new file mode 100644
index 0000000..f4c839f
--- /dev/null
+++ b/gmp-6.3.0/tests/mpz/t-get_d.c
@@ -0,0 +1,80 @@
+/* Test mpz_get_d.
+
+Copyright 2002, 2012, 2020 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU 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 MP Library test suite 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 General
+Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+void
+check_onebit (void)
+{
+  int     i;
+  mpz_t   z;
+  double  got, want;
+  /* FIXME: It'd be better to base this on the float format. */
+#if defined (__vax) || defined (__vax__)
+  int     limit = 127 - 1;  /* vax fp numbers have limited range */
+#else
+  int     limit = 512;
+#endif
+
+  mpz_init (z);
+
+  got = mpz_get_d (z);
+  if (got != 0)
+    {
+      printf    ("mpz_get_d wrong on zero\n");
+      abort();
+    }
+
+  mpz_set_ui (z, 1L);
+  want = 1.0;
+
+  for (i = 0; i < limit; i++)
+    {
+      got = mpz_get_d (z);
+
+      if (got != want)
+        {
+          printf    ("mpz_get_d wrong on 2**%d\n", i);
+          mpz_trace ("   z    ", z);
+          printf    ("   want  %.20g\n", want);
+          printf    ("   got   %.20g\n", got);
+          abort();
+        }
+
+      mpz_mul_2exp (z, z, 1L);
+      want *= 2.0;
+    }
+  mpz_clear (z);
+}
+
+
+int
+main (void)
+{
+  tests_start ();
+
+  check_onebit ();
+
+  tests_end ();
+  exit (0);
+}