rb_cstr_to_dbl   1702 complex.c      	return DBL2NUM(rb_cstr_to_dbl(s, 0));
rb_cstr_to_dbl   1080 ext/tk/tkutil/tkutil.c     return rb_float_new(rb_cstr_to_dbl(RSTRING_PTR(value), 1));
rb_cstr_to_dbl    620 include/ruby/intern.h double rb_cstr_to_dbl(const char*, int);
rb_cstr_to_dbl   2855 object.c           ret = rb_cstr_to_dbl(s, badcheck);