( -- ) ( F: r -- ) or ( r -- )

Display, with a trailing space, the top number on the floating-point stack using fixed-point notation:

An ambiguous condition exists if the value of BASE is not (decimal) ten or if the character string representation exceeds the size of the pictured numeric output string buffer.

12.6.1.0558 >FLOAT, A.12.6.2.1427 F.