1 files changed, 29 insertions, 1 deletions
diff --git a/numeric.c b/numeric.c
index e8ea6075a9..6bc2e4478e 100644
--- a/numeric.c
+++ b/numeric.c
@@ -6,7 +6,7 @@
   $Date$
   created at: Fri Aug 13 18:33:09 JST 1993
 
-  Copyright (C) 1993-1998 Yukihiro Matsumoto
+  Copyright (C) 1993-1999 Yukihiro Matsumoto
 
 ************************************************/
 
@@ -778,6 +778,27 @@ int_chr(num)
 }
 
 static VALUE
+rb_fix_induced_from(klass, x)
+    VALUE klass, x;
+{
+    return rb_funcall(x, rb_intern("to_i"), 0);
+}
+
+static VALUE
+rb_int_induced_from(klass, x)
+    VALUE klass, x;
+{
+    return rb_funcall(x, rb_intern("to_i"), 0);
+}
+
+static VALUE
+rb_flo_induced_from(klass, x)
+    VALUE klass, x;
+{
+    return rb_funcall(x, rb_intern("to_f"), 0);
+}
+
+static VALUE
 fix_uminus(num)
     VALUE num;
 {
@@ -1380,11 +1401,15 @@ Init_Numeric()
     rb_define_method(rb_cInteger, "downto", int_downto, 1);
     rb_define_method(rb_cInteger, "step", int_step, 2);
     rb_define_method(rb_cInteger, "times", int_dotimes, 0);
+    rb_include_module(rb_cInteger, rb_mPrecision);
     rb_define_method(rb_cInteger, "succ", int_succ, 0);
     rb_define_method(rb_cInteger, "next", int_succ, 0);
     rb_define_method(rb_cInteger, "chr", int_chr, 0);
 
     rb_cFixnum = rb_define_class("Fixnum", rb_cInteger);
+    rb_include_module(rb_cFixnum, rb_mPrecision);
+    rb_define_singleton_method(rb_cFixnum, "induced_from", rb_fix_induced_from, 1);
+    rb_define_singleton_method(rb_cInteger, "induced_from", rb_int_induced_from, 1);
 
     rb_undef_method(CLASS_OF(rb_cFixnum), "new");
 
@@ -1437,6 +1462,9 @@ Init_Numeric()
 
     rb_undef_method(CLASS_OF(rb_cFloat), "new");
 
+    rb_define_singleton_method(rb_cFloat, "induced_from", rb_flo_induced_from, 1);
+    rb_include_module(rb_cFloat, rb_mPrecision);
+
     rb_define_method(rb_cFloat, "to_s", flo_to_s, 0);
     rb_define_method(rb_cFloat, "coerce", flo_coerce, 1);
     rb_define_method(rb_cFloat, "-@", flo_uminus, 0);