Imported gcc-4.4.3

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

diff --git a/gmp/tests/mpz/t-perfpow.c b/gmp/tests/mpz/t-perfpow.c
new file mode 100644 (file)
index 0000000..aebe1b5
--- /dev/null
+++ b/gmp/tests/mpz/t-perfpow.c
@@ -0,0 +1,160 @@
+/* Test mpz_perfect_power_p.
+
+Copyright 2008 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"
+
+struct
+{
+  char *num_as_str;
+  char want;
+} tests[] =
+  {
+    { "0", 1},
+    { "1", 1},
+    {"-1", 1},
+    { "2", 0},
+    {"-2", 0},
+    { "3", 0},
+    {"-3", 0},
+    { "4", 1},
+    {"-4", 0},
+    { "64", 1},
+    {"-64", 1},
+    { "128", 1},
+    {"-128", 1},
+    { "256", 1},
+    {"-256", 0},
+    { "512", 1},
+    {"-512", 1},
+    { "0x4000000", 1},
+    {"-0x4000000", 1},
+    { "0x3cab640", 1},
+    {"-0x3cab640", 0},
+    { "0x3e23840", 1},
+    {"-0x3e23840", 0},
+    { "0x3d3a7ed1", 1},
+    {"-0x3d3a7ed1", 1},
+    { "0x30a7a6000", 1},
+    {"-0x30a7a6000", 1},
+    { "0xf33e5a5a59", 1},
+    {"-0xf33e5a5a59", 0},
+    { "0xed1b1182118135d", 1},
+    {"-0xed1b1182118135d", 1},
+    { "0xe71f6eb7689cc276b2f1", 1},
+    {"-0xe71f6eb7689cc276b2f1", 0},
+    { "0x12644507fe78cf563a4b342c92e7da9fe5e99cb75a01", 1},
+    {"-0x12644507fe78cf563a4b342c92e7da9fe5e99cb75a01", 0},
+    { "0x1ff2e7c581bb0951df644885bd33f50e472b0b73a204e13cbe98fdb424d66561e4000000", 1},
+    {"-0x1ff2e7c581bb0951df644885bd33f50e472b0b73a204e13cbe98fdb424d66561e4000000", 1},
+    { "0x2b9b44db2d91a6f8165c8c7339ef73633228ea29e388592e80354e4380004aad84000000", 1},
+    {"-0x2b9b44db2d91a6f8165c8c7339ef73633228ea29e388592e80354e4380004aad84000000", 1},
+    { "0x28d5a2b8f330910a9d3cda06036ae0546442e5b1a83b26a436efea5b727bf1bcbe7e12b47d81", 1},
+    {"-0x28d5a2b8f330910a9d3cda06036ae0546442e5b1a83b26a436efea5b727bf1bcbe7e12b47d81", 1},
+    {NULL, 0}
+  };
+
+
+void
+check_tests ()
+{
+  mpz_t x;
+  int i;
+  int got, want;
+
+  mpz_init (x);
+
+  for (i = 0; tests[i].num_as_str != NULL; i++)
+    {
+      mpz_set_str (x, tests[i].num_as_str, 0);
+      got = mpz_perfect_power_p (x);
+      want = tests[i].want;
+      if (got != want)
+       {
+         fprintf (stderr, "mpz_perfect_power_p returns %d when %d was expected\n", got, want);
+         fprintf (stderr, "fault operand: %s\n", tests[i].num_as_str);
+         abort ();
+       }
+    }
+
+  mpz_clear (x);
+}
+
+void
+check_random (int n_tests)
+{
+  int test;
+  mpz_t bs, op1, op2, x;
+  gmp_randstate_ptr rands;
+  unsigned long ex;
+
+  rands = RANDS;
+
+  mpz_init (bs);
+  mpz_init (op1);
+  mpz_init (op2);
+  mpz_init (x);
+
+  for (test = 0; test < n_tests; test++)
+    {
+      mpz_urandomb (bs, rands, 32);
+      mpz_rrandomb (op1, rands, mpz_get_ui (bs) % 32);
+      if (test & 1)
+       mpz_neg (op1, op1);
+      mpz_rrandomb (op2, rands, (mpz_get_ui (bs) >> 5) % 8);
+
+      ex = mpz_get_ui (op2) + 2;
+      mpz_pow_ui (x, op1, ex);
+
+      if (! mpz_perfect_power_p (x))
+       {
+         gmp_fprintf (stderr, "mpz_perfect_power_p rejects perfect power %Zd^%ld\n", op1, ex);
+         gmp_fprintf (stderr, "fault operand: %Zx\n", x);
+         abort ();
+       }
+    }
+
+  mpz_clear (bs);
+  mpz_clear (op1);
+  mpz_clear (op2);
+  mpz_clear (x);
+}
+
+int
+main (int argc, char **argv)
+{
+  int n_tests;
+
+  tests_start ();
+  mp_trace_base = -16;
+
+  check_tests ();
+
+  n_tests = 100000;
+  if (argc == 2)
+    n_tests = atoi (argv[1]);
+  check_random (n_tests);
+
+  tests_end ();
+  exit (0);
+}