Formats

Some f77 and f90 format edit descriptors can behave differently on other systems. Here are some format specifiers that f77 treats differently than some other implementations:

• A - Alphanumeric conversion. Used with character type data elements. In FORTRAN 77, this specifier worked with any variable type. f77 supports the older usage, up to four characters to a word.

• $ - Suppresses newline character output.

• R - Sets an arbitrary radix for the I formats that follow in the descriptor.

• SU - Selects unsigned output for following I formats. For example, you can convert output to either hexadecimal or octal with the following formats, instead of using the Z or O edit descriptors:

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  10    FORMAT( SU, 16R, I4 ) 
  20    FORMAT( SU, 8R, I4 ) 

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