rb_to_float       455 include/ruby/intern.h VALUE rb_to_float(VALUE);
rb_to_float        18 math.c         extern VALUE rb_to_float(VALUE val);
rb_to_float        19 math.c         #define Need_Float(x) (x) = rb_to_float(x)
rb_to_float       792 pack.c         		f = RFLOAT_VALUE(rb_to_float(from));