id.def: predefine to_i

* defs/id.def: predefine `to_i` as well as `to_int`.

* numeric.c (id_to_i): use predefined `idTo_i`.

* object.c (conv_method_names): add `to_i` ID.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46030 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

defs/id.def

@@ -35,6 +35,7 @@ firstline, predefined = __LINE__+1, %[\
   to_io
   to_a
   to_s
+  to_i
 
   _                                                     UScore
   "/*NULL*/"                                            NULL

numeric.c

@@ -109,7 +109,8 @@ static VALUE fix_uminus(VALUE num);
 static VALUE fix_mul(VALUE x, VALUE y);
 static VALUE int_pow(long x, unsigned long y);
 
-static ID id_coerce, id_to_i, id_div;
+static ID id_coerce, id_div;
+#define id_to_i idTo_i
 #define id_eq  idEq
 #define id_cmp idCmp
 
@@ -3981,7 +3982,6 @@ Init_Numeric(void)
     _control87(_control87(0,0),0x1FFF);
 #endif
     id_coerce = rb_intern("coerce");
-    id_to_i = rb_intern("to_i");
     id_div = rb_intern("div");
 
     rb_eZeroDivError = rb_define_class("ZeroDivisionError", rb_eStandardError);

object.c

@@ -2559,6 +2559,7 @@ static const struct conv_method_tbl {
     M(io),
     M(a),
     M(s),
+    M(i),
 #undef M
 };
 #define IMPLICIT_CONVERSIONS 7