1 files changed, 145 insertions, 0 deletions
diff --git a/gmp-6.3.0/tests/mpz/t-tdiv.c b/gmp-6.3.0/tests/mpz/t-tdiv.c
new file mode 100644
index 0000000..3d2eb36
--- /dev/null
+++ b/gmp-6.3.0/tests/mpz/t-tdiv.c
@@ -0,0 +1,145 @@
+/* Test mpz_abs, mpz_add, mpz_cmp, mpz_cmp_ui, mpz_tdiv_qr, mpz_tdiv_q,
+   mpz_tdiv_r, mpz_mul.
+
+Copyright 1991, 1993, 1994, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU 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 test suite 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 General
+Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "gmp-impl.h"
+#include "tests.h"
+
+void dump_abort (mpz_t, mpz_t);
+void debug_mp (mpz_t, int);
+
+int
+main (int argc, char **argv)
+{
+  mpz_t dividend, divisor;
+  mpz_t quotient, remainder;
+  mpz_t quotient2, remainder2;
+  mpz_t temp;
+  mp_size_t dividend_size, divisor_size;
+  int i;
+  int reps = 1000;
+  gmp_randstate_ptr rands;
+  mpz_t bs;
+  unsigned long bsi, size_range;
+
+  tests_start ();
+  TESTS_REPS (reps, argv, argc);
+
+  rands = RANDS;
+
+  mpz_init (bs);
+
+  mpz_init (dividend);
+  mpz_init (divisor);
+  mpz_init (quotient);
+  mpz_init (remainder);
+  mpz_init (quotient2);
+  mpz_init (remainder2);
+  mpz_init (temp);
+
+  for (i = 0; i < reps; i++)
+    {
+      mpz_urandomb (bs, rands, 32);
+      size_range = mpz_get_ui (bs) % 18 + 2; /* 0..524288 bit operands */
+
+      do
+	{
+	  mpz_urandomb (bs, rands, size_range);
+	  divisor_size = mpz_get_ui (bs);
+	  mpz_rrandomb (divisor, rands, divisor_size);
+	}
+      while (mpz_sgn (divisor) == 0);
+
+      mpz_urandomb (bs, rands, size_range);
+      dividend_size = mpz_get_ui (bs) + divisor_size;
+      mpz_rrandomb (dividend, rands, dividend_size);
+
+      mpz_urandomb (bs, rands, 2);
+      bsi = mpz_get_ui (bs);
+      if ((bsi & 1) != 0)
+	mpz_neg (dividend, dividend);
+      if ((bsi & 2) != 0)
+	mpz_neg (divisor, divisor);
+
+      /* printf ("%ld %ld\n", SIZ (dividend), SIZ (divisor)); */
+
+      mpz_tdiv_qr (quotient, remainder, dividend, divisor);
+      mpz_tdiv_q (quotient2, dividend, divisor);
+      mpz_tdiv_r (remainder2, dividend, divisor);
+
+      /* First determine that the quotients and remainders computed
+	 with different functions are equal.  */
+      if (mpz_cmp (quotient, quotient2) != 0)
+	dump_abort (dividend, divisor);
+      if (mpz_cmp (remainder, remainder2) != 0)
+	dump_abort (dividend, divisor);
+
+      /* Check if the sign of the quotient is correct.  */
+      if (mpz_cmp_ui (quotient, 0) != 0)
+	if ((mpz_cmp_ui (quotient, 0) < 0)
+	    != ((mpz_cmp_ui (dividend, 0) ^ mpz_cmp_ui (divisor, 0)) < 0))
+	dump_abort (dividend, divisor);
+
+      /* Check if the remainder has the same sign as the dividend
+	 (quotient rounded towards 0).  */
+      if (mpz_cmp_ui (remainder, 0) != 0)
+	if ((mpz_cmp_ui (remainder, 0) < 0) != (mpz_cmp_ui (dividend, 0) < 0))
+	  dump_abort (dividend, divisor);
+
+      mpz_mul (temp, quotient, divisor);
+      mpz_add (temp, temp, remainder);
+      if (mpz_cmp (temp, dividend) != 0)
+	dump_abort (dividend, divisor);
+
+      mpz_abs (temp, divisor);
+      mpz_abs (remainder, remainder);
+      if (mpz_cmp (remainder, temp) >= 0)
+	dump_abort (dividend, divisor);
+    }
+
+  mpz_clear (bs);
+  mpz_clear (dividend);
+  mpz_clear (divisor);
+  mpz_clear (quotient);
+  mpz_clear (remainder);
+  mpz_clear (quotient2);
+  mpz_clear (remainder2);
+  mpz_clear (temp);
+
+  tests_end ();
+  exit (0);
+}
+
+void
+dump_abort (mpz_t dividend, mpz_t divisor)
+{
+  fprintf (stderr, "ERROR\n");
+  fprintf (stderr, "dividend = "); debug_mp (dividend, -16);
+  fprintf (stderr, "divisor  = "); debug_mp (divisor, -16);
+  abort();
+}
+
+void
+debug_mp (mpz_t x, int base)
+{
+  mpz_out_str (stderr, base, x); fputc ('\n', stderr);
+}