From ca524bcd494e2f284c3211cad8e8dde70e8aa86a Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 16 Jul 2019 08:15:05 +0900
Subject: [PATCH] Expanded f_numerator

---
 complex.c  | 13 ++++++++++++-
 internal.h |  1 +
 rational.c |  6 +++---
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/complex.c b/complex.c
index 74d91b044f..fa00036ffb 100644
--- a/complex.c
+++ b/complex.c
@@ -191,6 +191,18 @@ f_arg(VALUE x)
     return rb_funcall(x, id_arg, 0);
 }
 
+inline static VALUE
+f_numerator(VALUE x)
+{
+    if (RB_TYPE_P(x, T_RATIONAL)) {
+        return RRATIONAL(x)->num;
+    }
+    if (RB_FLOAT_TYPE_P(x)) {
+        return rb_float_numerator(x);
+    }
+    return x;
+}
+
 inline static VALUE
 f_denominator(VALUE x)
 {
@@ -221,7 +233,6 @@ f_negate(VALUE x)
     return rb_funcall(x, id_negate, 0);
 }
 
-fun1(numerator)
 fun1(real_p)
 
 inline static VALUE
diff --git a/internal.h b/internal.h
index bd82231d37..2f0a5afe80 100644
--- a/internal.h
+++ b/internal.h
@@ -2029,6 +2029,7 @@ VALUE rb_rational_abs(VALUE self);
 VALUE rb_rational_cmp(VALUE self, VALUE other);
 VALUE rb_rational_pow(VALUE self, VALUE other);
 VALUE rb_numeric_quo(VALUE x, VALUE y);
+VALUE rb_float_numerator(VALUE x);
 VALUE rb_float_denominator(VALUE x);
 
 /* re.c */
diff --git a/rational.c b/rational.c
index 7607628cb0..7113e15e8e 100644
--- a/rational.c
+++ b/rational.c
@@ -2057,8 +2057,8 @@ static VALUE float_to_r(VALUE self);
  *
  * See also Float#denominator.
  */
-static VALUE
-float_numerator(VALUE self)
+VALUE
+rb_float_numerator(VALUE self)
 {
     double d = RFLOAT_VALUE(self);
     VALUE r;
@@ -2777,7 +2777,7 @@ Init_Rational(void)
     rb_define_method(rb_cInteger, "numerator", integer_numerator, 0);
     rb_define_method(rb_cInteger, "denominator", integer_denominator, 0);
 
-    rb_define_method(rb_cFloat, "numerator", float_numerator, 0);
+    rb_define_method(rb_cFloat, "numerator", rb_float_numerator, 0);
     rb_define_method(rb_cFloat, "denominator", rb_float_denominator, 0);
 
     rb_define_method(rb_cNilClass, "to_r", nilclass_to_r, 0);