C means class method
| Float |
| + abs( ) : Float |
| + ceil( ) : Fixnum |
| + floor( ) : Fixnum |
| + infinite?( ) : Fixnum |
| + nan?( ) : Boolean |
| + power!(Float) : Float |
| + round( ) : Fixnum |
| + size( ) : Fixnum |
| + to_f( ): Float |
| + to_s( ): String |
| + to_s(Fixnum): String |
| + zero?( ): Boolean |
| + +(Float): Float |
| + -(Float): Float |
| + *(Float): Float |
| + /(Float): Float |
| + %(Float): Float |
| + ==(Time): Boolean |
| + <=>(Time): Time |