{complex,object,rational}.c: document exception: false

From: Victor Shepelev <zverok.offline@gmail.com>

[ruby-core:90673] [Bug #15452]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 1 deletions

diff --git a/complex.c b/complex.c
index 35e56283ef..eb2a76737b 100644
--- a/complex.c
+++ b/complex.c
@@ -394,7 +394,7 @@ static VALUE nucomp_s_convert(int argc, VALUE *argv, VALUE klass);
 
 /*
  * call-seq:
- *    Complex(x[, y])  ->  numeric
+ *    Complex(x[, y], exception: false)  ->  numeric
  *
  * Returns x+i*y;
  *
@@ -403,6 +403,9 @@ static VALUE nucomp_s_convert(int argc, VALUE *argv, VALUE klass);
  *    Complex(nil)     #=> TypeError
  *    Complex(1, nil)  #=> TypeError
  *
+ *    Complex(1, nil, exception: false) # => nil
+ *    Complex('1+2', exception: false) # => nil
+ *
  * Syntax of string form:
  *
  *   string form = extra spaces , complex , extra spaces ;