From 301d194ee3b49e6b078eccb999dd538e9bfa8c7c Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 7 Oct 2018 13:02:46 +0900
Subject: Add Integer.try_convert [Feature #15211]

---
 numeric.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'numeric.c')

diff --git a/numeric.c b/numeric.c
index c9dc24bcf1..345067c6a5 100644
--- a/numeric.c
+++ b/numeric.c
@@ -5247,6 +5247,12 @@ rb_int_s_isqrt(VALUE self, VALUE num)
     }
 }
 
+static VALUE
+int_s_try_convert(VALUE self, VALUE num)
+{
+    return rb_check_integer_type(num);
+}
+
 /*
  *  Document-class: ZeroDivisionError
  *
@@ -5473,6 +5479,7 @@ Init_Numeric(void)
     rb_undef_alloc_func(rb_cInteger);
     rb_undef_method(CLASS_OF(rb_cInteger), "new");
     rb_define_singleton_method(rb_cInteger, "sqrt", rb_int_s_isqrt, 1);
+    rb_define_singleton_method(rb_cInteger, "try_convert", int_s_try_convert, 1);
 
     rb_define_method(rb_cInteger, "to_s", int_to_s, -1);
     rb_define_alias(rb_cInteger, "inspect", "to_s");
-- 
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