{Fixnum,Bignum}#** is unified into Integer.

* numeric.c (rb_int_pow): {Fixnum,Bignum}#** is unified into
  Integer.

* bignum.c (rb_big_pow): Don't define Bignum#**.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 4 deletions

diff --git a/numeric.c b/numeric.c
index 5201db10fd..0ef31b7053 100644
--- a/numeric.c
+++ b/numeric.c
@@ -3557,16 +3557,22 @@ fix_divmod(VALUE x, VALUE y)
 }
 
 /*
- *  Document-method: Fixnum#**
+ *  Document-method: Integer#**
  *  call-seq:
- *    fix ** numeric  ->  numeric_result
+ *    integer ** numeric  ->  numeric_result
  *
- *  Raises +fix+ to the power of +numeric+, which may be negative or
+ *  Raises +integer+ to the power of +numeric+, which may be negative or
  *  fractional.
+ *  The result may be a Fixnum, Bignum, or Float
  *
  *    2 ** 3      #=> 8
  *    2 ** -1     #=> (1/2)
  *    2 ** 0.5    #=> 1.4142135623731
+ *
+ *    123456789 ** 2      #=> 15241578750190521
+ *    123456789 ** 1.2    #=> 5126464716.09932
+ *    123456789 ** -2     #=> 6.5610001194102e-17
+ *
  */
 
 static VALUE
@@ -3666,6 +3672,18 @@ fix_pow(VALUE x, VALUE y)
     }
 }
 
+static VALUE
+rb_int_pow(VALUE x, VALUE y)
+{
+    if (FIXNUM_P(x)) {
+	return fix_pow(x, y);
+    }
+    else if (RB_TYPE_P(x, T_BIGNUM)) {
+	return rb_big_pow(x, y);
+    }
+    return Qnil;
+}
+
 /*
  * Document-method: Fixnum#==
  * call-seq:
@@ -4799,7 +4817,7 @@ Init_Numeric(void)
     rb_define_method(rb_cFixnum, "modulo", fix_mod, 1);
     rb_define_method(rb_cFixnum, "divmod", fix_divmod, 1);
     rb_define_method(rb_cFixnum, "fdiv", fix_fdiv, 1);
-    rb_define_method(rb_cFixnum, "**", fix_pow, 1);
+    rb_define_method(rb_cInteger, "**", rb_int_pow, 1);
 
     rb_define_method(rb_cInteger, "abs", int_abs, 0);
     rb_define_method(rb_cInteger, "magnitude", int_abs, 0);