X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=gmp%2Ftests%2Fmpz%2Ft-sqrtrem.c;fp=gmp%2Ftests%2Fmpz%2Ft-sqrtrem.c;h=976b9a6e09d770eaf2a152d5ac5114ca596cf192;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git

diff --git a/gmp/tests/mpz/t-sqrtrem.c b/gmp/tests/mpz/t-sqrtrem.c
new file mode 100644
index 00000000..976b9a6e
--- /dev/null
+++ b/gmp/tests/mpz/t-sqrtrem.c
@@ -0,0 +1,118 @@
+/* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
+
+Copyright 1991, 1993, 1994, 1996, 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"
+
+void dump_abort __GMP_PROTO ((mpz_t, mpz_t, mpz_t));
+void debug_mp __GMP_PROTO ((mpz_t, int));
+
+int
+main (int argc, char **argv)
+{
+  mpz_t x2;
+  mpz_t x, rem;
+  mpz_t temp, temp2;
+  mp_size_t x2_size;
+  int i;
+  int reps = 200000;
+  gmp_randstate_ptr rands;
+  mpz_t bs;
+  unsigned long size_range;
+
+  tests_start ();
+  rands = RANDS;
+
+  mpz_init (bs);
+
+  if (argc == 2)
+    reps = atoi (argv[1]);
+
+  mpz_init (x2);
+  mpz_init (x);
+  mpz_init (rem);
+  mpz_init (temp);
+  mpz_init (temp2);
+
+  for (i = 0; i < reps; i++)
+    {
+      mpz_urandomb (bs, rands, 32);
+      size_range = mpz_get_ui (bs) % 12 + 2; /* 0..8191 bit operands */
+
+      mpz_urandomb (bs, rands, size_range);
+      x2_size = mpz_get_ui (bs);
+      mpz_rrandomb (x2, rands, x2_size);
+
+      /* printf ("%ld\n", SIZ (x2)); */
+
+      mpz_sqrtrem (x, rem, x2);
+      MPZ_CHECK_FORMAT (x);
+      MPZ_CHECK_FORMAT (rem);
+
+      mpz_mul (temp, x, x);
+
+      /* Is square of result > argument?  */
+      if (mpz_cmp (temp, x2) > 0)
+	dump_abort (x2, x, rem);
+
+      mpz_add_ui (temp2, x, 1);
+      mpz_mul (temp2, temp2, temp2);
+
+      /* Is square of (result + 1) <= argument?  */
+      if (mpz_cmp (temp2, x2) <= 0)
+	dump_abort (x2, x, rem);
+
+      mpz_add (temp2, temp, rem);
+
+      /* Is the remainder wrong?  */
+      if (mpz_cmp (x2, temp2) != 0)
+	dump_abort (x2, x, rem);
+    }
+
+  mpz_clear (bs);
+  mpz_clear (x2);
+  mpz_clear (x);
+  mpz_clear (rem);
+  mpz_clear (temp);
+  mpz_clear (temp2);
+
+  tests_end ();
+  exit (0);
+}
+
+void
+dump_abort (mpz_t x2, mpz_t x, mpz_t rem)
+{
+  fprintf (stderr, "ERROR\n");
+  fprintf (stderr, "x2        = "); debug_mp (x2, -16);
+  fprintf (stderr, "x         = "); debug_mp (x, -16);
+  fprintf (stderr, "remainder = "); debug_mp (rem, -16);
+  abort();
+}
+
+void
+debug_mp (mpz_t x, int base)
+{
+  mpz_out_str (stderr, base, x); fputc ('\n', stderr);
+}