A flonum represents a floating point number. The translation is indirect: a decimal floating point number from the text is converted by as to a generic binary floating point number of more than sufficient precision. This generic floating point number is converted to a particular computer's floating point format (or formats) by a portion of as specialized to that computer.
A flonum is written by writing (in order)
On the H8/300 and Renesas / SuperH SH architectures, the letter must be one of the letters ‘ DFPRSX ’ (in upper or lower case).
On the ARC, the letter must be one of the letters ‘ DFRS ’ (in upper or lower case).
On the HPPA architecture, the letter must be ‘ E ’ (upper case only).
At least one of the integer part or the fractional part must be present. The floating point number has the usual base-10 value.
as does all processing using integers. Flonums are computed independently of any floating point hardware in the computer running as .