/*
 * call-seq:
 *   enc.name => string
 *
 * Returns the name of the encoding.
 *
 *   Encoding::UTF_8.name       => "UTF-8"
 */
static VALUE
enc_name(VALUE self)
{
    return rb_usascii_str_new2(rb_enc_name((rb_encoding*)DATA_PTR(self)));
}