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-rw-r--r--ext/bigdecimal/bigdecimal.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 0157ef537d..6c845fcda9 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -1891,6 +1891,8 @@ BigDecimal_div3(int argc, VALUE *argv, VALUE self)
*
* Examples:
*
+ * # Set the rounding mode.
+ * BigDecimal.mode(BigDecimal::ROUND_MODE, BigDecimal::ROUND_HALF_UP)
* BigDecimal('111111.111').add(1, 0) # => 0.111112111e6
* BigDecimal('111111.111').add(1, 2) # => 0.11e6
* BigDecimal('111111.111').add(1, 3) # => 0.111e6