as.info: VAX-float

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VAX Floating Point

   Conversion of flonums to floating point is correct, and compatible
with previous assemblers.  Rounding is towards zero if the remainder is
exactly half the least significant bit.
   `D', `F', `G' and `H' floating point formats are understood.
   Immediate floating literals (_e.g._ `S`$6.9') are rendered
correctly.  Again, rounding is towards zero in the boundary case.
   The `.float' directive produces `f' format numbers.  The `.double'
directive produces `d' format numbers.