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-rw-r--r--test/-ext-/bignum/test_mul.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/test/-ext-/bignum/test_mul.rb b/test/-ext-/bignum/test_mul.rb
index e462506e9fe..7841dfffb2c 100644
--- a/test/-ext-/bignum/test_mul.rb
+++ b/test/-ext-/bignum/test_mul.rb
@@ -126,5 +126,12 @@ class TestBignum < Test::Unit::TestCase
assert_equal(x.big_mul_normal(y), x.big_mul_toom3(y))
end
+ def test_mul_gmp
+ x = (1 << 2*BITSPERDIG) | (1 << BITSPERDIG) | 1
+ y = (1 << 2*BITSPERDIG) | (1 << BITSPERDIG) | 1
+ assert_equal(x.big_mul_normal(y), x.big_mul_gmp(y))
+ rescue NotImplementedError
+ end
+
end
end