* bignum.c (rb_big_to_f, Bignum#to_f): removed them because they are

unified with int_to_f and Integer#to_f.

* numeric.c (int_to_f): treat Bignum values directly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54181 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Fri Mar 19 00:00:00 2016  Kenta Murata  <mrkn@mrkn.jp>
+
+	* bignum.c (rb_big_to_f, Bignum#to_f): removed them because they are
+	  unified with int_to_f and Integer#to_f.
+
+	* numeric.c (int_to_f): treat Bignum values directly.
+
 Fri Mar 18 23:41:00 2016  Kenta Murata  <mrkn@mrkn.jp>
 
 	* numeric.c (int_to_f, fix_to_f): rename fix_to_f to int_to_f, and add

bignum.c

@@ -5191,21 +5191,6 @@ rb_big2dbl(VALUE x)
     return d;
 }
 
-/*
- *  call-seq:
- *     big.to_f -> float
- *
- *  Converts <i>big</i> to a <code>Float</code>. If <i>big</i> doesn't
- *  fit in a <code>Float</code>, the result is infinity.
- *
- */
-
-static VALUE
-rb_big_to_f(VALUE x)
-{
-    return DBL2NUM(rb_big2dbl(x));
-}
-
 VALUE
 rb_integer_float_cmp(VALUE x, VALUE y)
 {
@@ -7033,7 +7018,6 @@ Init_Bignum(void)
     rb_define_method(rb_cBignum, "<", big_lt, 1);
     rb_define_method(rb_cBignum, "<=", big_le, 1);
     rb_define_method(rb_cBignum, "===", rb_big_eq, 1);
-    rb_define_method(rb_cBignum, "to_f", rb_big_to_f, 0);
     rb_define_method(rb_cBignum, "abs", rb_big_abs, 0);
     rb_define_method(rb_cBignum, "magnitude", rb_big_abs, 0);
     rb_define_method(rb_cBignum, "size", rb_big_size, 0);

numeric.c

@@ -3767,7 +3767,8 @@ fix_aref(VALUE fix, VALUE idx)
  *  call-seq:
  *     int.to_f  ->  float
  *
- *  Converts +int+ to a Float.
+ *  Converts +int+ to a +Float+.  If +int+ doesn't fit in a +Float+,
+ *  the result is infinity.
  *
  */
 
@@ -3779,6 +3780,9 @@ int_to_f(VALUE num)
     if (FIXNUM_P(num)) {
 	val = (double)FIX2LONG(num);
     }
+    else if (RB_TYPE_P(num, T_BIGNUM)) {
+	val = rb_big2dbl(num);
+    }
     else {
 	rb_raise(rb_eTypeError, "Unknown subclass for to_f: %s", rb_obj_classname(num));
     }