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FMT what does it mean?
- Thread starter pi3cho
- Start date
To be a little bit more precise than GerritGroot, even if his answer is in the same time short and correct, it exists three types of format when writing to (reading from) a formatted file :
- fmt=* : list directed format, which produces an output which is partly compiler dependent,
- fmt=label : the label is a integer value (10, 999 ...) which points to a specific FORMAT instruction associated to that label. In that case, the format is fixed (determined at compile time)
- fmt=variable_name : in that case, the format may be defined at run time and is represented by the contents of a CHARACTER variable.
Taking into account the instruction you have provided, it seems that you are using the third case.
Two additional remarks :
- the syntax 'fmt=' is optional if the format is provided in second position, like your example.
- a format follows rather complicated rules : you need to read the documentation before being able to create your own format.
- fmt=* : list directed format, which produces an output which is partly compiler dependent,
- fmt=label : the label is a integer value (10, 999 ...) which points to a specific FORMAT instruction associated to that label. In that case, the format is fixed (determined at compile time)
- fmt=variable_name : in that case, the format may be defined at run time and is represented by the contents of a CHARACTER variable.
Taking into account the instruction you have provided, it seems that you are using the third case.
Two additional remarks :
- the syntax 'fmt=' is optional if the format is provided in second position, like your example.
- a format follows rather complicated rules : you need to read the documentation before being able to create your own format.
- Thread starter
- #4
GerritGroot
Technical User
Yes, that's correct varfmt must be a string like
'(A3,F15.10,E20.15)' for example.
You can try findng out with WRITE(*,*)varfmt if you don't want to look it up in the code... ..or WRITE(*,FMT='(A)')varfmt talking about formats...
'(A3,F15.10,E20.15)' for example.
You can try findng out with WRITE(*,*)varfmt if you don't want to look it up in the code... ..or WRITE(*,FMT='(A)')varfmt talking about formats...
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