- ... facility.1
- This is a non-standard
facility which originated in VAX FORTRAN but is now available on most
FORTRAN compilers. It is a compiler directive, rather than a function,
and works by instructing the compiler to pass the argument by value
rather than by address. The routine receiving this argument is then
tricked into thinking that it has received an array starting at the
address given by the pointer value. There are other ways of achieving
this effect, such as by addressing an array outside of its bounds, but
the %VAL method is the one most widely used in Starlink
software.
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- ... functions2
- The two CNF header files,
cnf.h and f77.h are now identical. For legacy reasons
it is acceptable to #include either or both in the code - just
f77.h is preferred.
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