Re: Fortran 77 parser

James Giles wrote:
... people using Crays
tended to use standard conforming declarations more often. (Maybe
because they got burned by REAL*n not being what they expected?
I don't recall much use of that form either, although I know that was
permitted. Mostly eveyone was actively advosed not to use it.)

Many people using Crays, at least in the early days, had migrated
from 60-bit CDC gear. CDC did not support the IBM-ish *n notation.
So there was never a legacy of using it for double precision.

I have here pocket reference cards for those compilers. And sure
enough the CFT card says DOUBLE [PRECISION] as the syntax.
The CFT77 card doesn't, but perhaps the manual would. I have
manuals somewhere. I think they're boxed in a rented storage.

CFT77 1.0 compiled pretty much everything that CFT did, though since
the compilers had zero lines of code in common, there were a few
inevitable nuances... IIRC, the DOUBLE extension was removed around
the same time the PUNCH statement disappeared. Like at 2.0 or 3.0.

So it may depend on which release your reference card is for.
Or maybe it went undocumented? My CFT77 manuals are packed as
well. (I wonder if Al K has any at bitsavers? My wife would love
it if I would donate a few more boxes to the museum...)

W.

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