FS.

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

Display, with a trailing space, the top number on the floating-point stack in scientific notation: <significand><exponent> where:

<significand> := [-]<digit>.<digits0>
<exponent> := E[-]<digits>

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.

See:

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