* mpz/tests/t-fac_ui.c: New test.

1 files changed, 93 insertions, 0 deletions

diff --git a/mpz/tests/t-fac_ui.c b/mpz/tests/t-fac_ui.c
new file mode 100644
index 000000000..967d1a06c
--- /dev/null
+++ b/mpz/tests/t-fac_ui.c
@@ -0,0 +1,93 @@
+/* Exercise mpz_fac_ui.
+
+Copyright (C) 2000 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 2.1 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; 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 "gmp-impl.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).  */
+
+
+unsigned long  allocate_count = 0;
+void *
+allocate (size_t size)
+{
+  allocate_count++;
+  return __gmp_default_allocate (size);
+}
+void
+release (void *ptr, size_t size)
+{
+  allocate_count--;
+  __gmp_default_free (ptr, size);
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  unsigned long  n;
+  unsigned long  limit = 1500;
+  mpz_t          f, r;
+
+  if (argc > 1 && argv[1][0] == 'x')
+    limit = ULONG_MAX;
+  else if (argc > 1)
+    limit = atoi (argv[1]);
+
+  if (BITS_PER_MP_LIMB < BITS_PER_LONGINT)
+    limit = MIN (limit, MP_LIMB_T_MAX);
+
+  mp_set_memory_functions (allocate, NULL, release);
+
+  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_fib_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);
+
+  ASSERT_ALWAYS (allocate_count == 0);
+
+  exit (0);
+}