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-rw-r--r--ext/bigdecimal/bigdecimal.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 44e13a4..08febb5 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -2463,6 +2463,19 @@ static Real *BigDecimal_new(int argc, VALUE *argv);
*
* The actual number of significant digits used in computation is usually
* larger than the specified number.
+ *
+ * ==== Exceptions
+ *
+ * TypeError:: If the +initial+ type is neither Fixnum, Bignum, Float,
+ * Rational, nor BigDecimal, this exception is raised.
+ *
+ * TypeError:: If the +digits+ is not a Fixnum, this exception is raised.
+ *
+ * ArgumentError:: If +initial+ is a Float, and the +digits+ is larger than
+ * Float::DIG + 1, this exception is raised.
+ *
+ * ArgumentError:: If the +initial+ is a Float or Rational, and the +digits+
+ * value is omitted, this exception is raised.
*/
static VALUE
BigDecimal_initialize(int argc, VALUE *argv, VALUE self)