Imported gcc-4.4.3

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

diff --git a/gmp/tests/mpz/t-fac_ui.c b/gmp/tests/mpz/t-fac_ui.c
new file mode 100644 (file)
index 0000000..25d746e
--- /dev/null
+++ b/gmp/tests/mpz/t-fac_ui.c
@@ -0,0 +1,77 @@
+/* Exercise mpz_fac_ui.
+
+Copyright 2000, 2001, 2002 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"
+
+
+/* Usage: t-fac_ui [x|num]
+
+   With no arguments testing goes up to the initial value of "limit" below.
+   With a number argument tests are carried that far, or with a literal "x"
+   tests are continued without limit (this being meant only for development
+   purposes).  */
+
+
+int
+main (int argc, char *argv[])
+{
+  unsigned long  n;
+  unsigned long  limit = 1500;
+  mpz_t          f, r;
+
+  tests_start ();
+
+  if (argc > 1 && argv[1][0] == 'x')
+    limit = ULONG_MAX;
+  else if (argc > 1)
+    limit = atoi (argv[1]);
+
+  /* for small limb testing */
+  limit = MIN (limit, MP_LIMB_T_MAX);
+
+  mpz_init_set_ui (f, 1);  /* 0! = 1 */
+  mpz_init (r);
+
+  for (n = 0; n < limit; n++)
+    {
+      mpz_fac_ui (r, n);
+      MPZ_CHECK_FORMAT (r);
+
+      if (mpz_cmp (f, r) != 0)
+        {
+          printf ("mpz_fac_ui(%lu) wrong\n", n);
+          printf ("  got  "); mpz_out_str (stdout, 10, r); printf("\n");
+          printf ("  want "); mpz_out_str (stdout, 10, f); printf("\n");
+          abort ();
+        }
+
+      mpz_mul_ui (f, f, n+1);  /* (n+1)! = n! * n */
+    }
+
+  mpz_clear (f);
+  mpz_clear (r);
+
+  tests_end ();
+
+  exit (0);
+}