Cast divmod quotient to int (#312)

* Cast divmod quotient to int

* fixup! Cast divmod quotient to int

---------

Co-authored-by: tomoya ishida <[email protected]>

Author: mrzasa

ext/bigdecimal/bigdecimal.c

@@ -1867,7 +1867,7 @@ BigDecimal_divmod(VALUE self, VALUE r)
     NULLABLE_BDVALUE div, mod;
 
     if (BigDecimal_DoDivmod(self, r, &div, &mod, false)) {
-        return rb_assoc_new(CheckGetValue(bdvalue_nonnullable(div)), CheckGetValue(bdvalue_nonnullable(mod)));
+        return rb_assoc_new(BigDecimal_to_i(CheckGetValue(bdvalue_nonnullable(div))), CheckGetValue(bdvalue_nonnullable(mod)));
     }
     return DoSomeOne(self,r,rb_intern("divmod"));
 }

test/bigdecimal/test_bigdecimal.rb

@@ -1245,6 +1245,10 @@ def test_divmod
 
     assert_equal([0, 0], BigDecimal("0").divmod(2))
 
+    quotient, reminder =  BigDecimal("10").divmod(3)
+    assert_kind_of(Integer, quotient)
+    assert_kind_of(BigDecimal, reminder)
+
     BigDecimal.mode(BigDecimal::EXCEPTION_NaN, false)
     assert_raise(ZeroDivisionError){BigDecimal("0").divmod(0)}
   end