1 files changed, 60 insertions, 0 deletions
diff --git a/gmp-6.3.0/tests/mpq/t-inv.c b/gmp-6.3.0/tests/mpq/t-inv.c
new file mode 100644
index 0000000..87ba8d4
--- /dev/null
+++ b/gmp-6.3.0/tests/mpq/t-inv.c
@@ -0,0 +1,60 @@
+/* Test mpq_inv (and set/get_num/den).
+
+Copyright 2012 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 "gmp-impl.h"
+#include "tests.h"
+
+int
+main (int argc, char **argv)
+{
+  mpq_t a, b;
+  mpz_t m, n;
+  const char* s = "-420000000000000000000000";
+
+  tests_start ();
+
+  mpq_inits (a, b, (mpq_ptr)0);
+  mpz_inits (m, n, (mpz_ptr)0);
+
+  mpz_set_ui (m, 13);
+  mpq_set_den (a, m);
+  mpz_set_str (m, s, 0);
+  mpq_set_num (a, m);
+  MPQ_CHECK_FORMAT (a);
+  mpq_inv (b, a);
+  MPQ_CHECK_FORMAT (b);
+  mpq_get_num (n, b);
+  ASSERT_ALWAYS (mpz_cmp_si (n, -13) == 0);
+  mpq_neg (b, b);
+  mpq_inv (a, b);
+  MPQ_CHECK_FORMAT (a);
+  mpq_inv (b, b);
+  MPQ_CHECK_FORMAT (b);
+  mpq_get_den (n, b);
+  ASSERT_ALWAYS (mpz_cmp_ui (n, 13) == 0);
+  mpq_get_num (n, a);
+  mpz_add (n, n, m);
+  ASSERT_ALWAYS (mpz_sgn (n) == 0);
+
+  mpq_clears (a, b, (mpq_ptr)0);
+  mpz_clears (m, n, (mpz_ptr)0);
+
+  tests_end ();
+  return 0;
+}