Imported gcc-4.4.3

[msp430-gcc.git] / gmp / tests / mpz / t-get_si.c

diff --git a/gmp/tests/mpz/t-get_si.c b/gmp/tests/mpz/t-get_si.c
new file mode 100644 (file)
index 0000000..0a9739b
--- /dev/null
+++ b/gmp/tests/mpz/t-get_si.c
@@ -0,0 +1,122 @@
+/* Exercise mpz_get_si.
+
+Copyright 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+void
+check_data (void)
+{
+  static const struct {
+    const char  *n;
+    long        want;
+  } data[] = {
+    { "0",      0L },
+    { "1",      1L },
+    { "-1",     -1L },
+    { "2",      2L },
+    { "-2",     -2L },
+    { "12345",  12345L },
+    { "-12345", -12345L },
+  };
+
+  int    i;
+  mpz_t  n;
+  long   got;
+
+  mpz_init (n);
+  for (i = 0; i < numberof (data); i++)
+    {
+      mpz_set_str_or_abort (n, data[i].n, 0);
+
+      got = mpz_get_si (n);
+      if (got != data[i].want)
+       {
+         printf ("mpz_get_si wrong at data[%d]\n", i);
+         printf ("   n     \"%s\" (", data[i].n);
+         mpz_out_str (stdout, 10, n); printf (", hex ");
+         mpz_out_str (stdout, 16, n); printf (")\n");
+         printf ("   got   %ld (0x%lX)\n", got, got);
+         printf ("   want  %ld (0x%lX)\n", data[i].want, data[i].want);
+         abort();
+       }
+    }
+  mpz_clear (n);
+}
+
+
+void
+check_max (void)
+{
+  mpz_t  n;
+  long   want;
+  long   got;
+
+  mpz_init (n);
+
+#define CHECK_MAX(name)                                 \
+  if (got != want)                                      \
+    {                                                   \
+      printf ("mpz_get_si wrong on %s\n", name);        \
+      printf ("   n    ");                              \
+      mpz_out_str (stdout, 10, n); printf (", hex ");   \
+      mpz_out_str (stdout, 16, n); printf ("\n");       \
+      printf ("   got  %ld, hex %lX\n", got, got);      \
+      printf ("   want %ld, hex %lX\n", want, want);    \
+      abort();                                          \
+    }
+
+  want = LONG_MAX;
+  mpz_set_si (n, want);
+  got = mpz_get_si (n);
+  CHECK_MAX ("LONG_MAX");
+
+  want = LONG_MIN;
+  mpz_set_si (n, want);
+  got = mpz_get_si (n);
+  CHECK_MAX ("LONG_MIN");
+
+  /* The following checks that -0x100000000 gives -0x80000000.  This doesn't
+     actually fit in a long and the result from mpz_get_si() is undefined,
+     but -0x80000000 is what comes out currently, and it should be that
+     value irrespective of the mp_limb_t size (long or long long).  */
+
+  want = LONG_MIN;
+  mpz_mul_2exp (n, n, 1);
+  CHECK_MAX ("-0x100...00");
+
+  mpz_clear (n);
+}
+
+
+int
+main (void)
+{
+  tests_start ();
+
+  check_data ();
+  check_max ();
+
+  tests_end ();
+  exit (0);
+}