A data edit descriptor takes one of the following forms:
The number of significant digits is affected if a scale factor is specified for the data edit descriptor.
Rules and Behavior
Fortran 95/90 (and the previous standard) allows the field width to be omitted only for the A descriptor. However, Compaq Fortran allows the field width to be omitted for any data edit descriptor.
The r, w, m, d, and e must all be positive, unsigned, integer literal constants; or variable format expressions; no kind parameter can be specified. They must not be named constants.
Actual useful ranges for r, w, m, d, and e may be constrained by record sizes (RECL) and the file system.
The data edit descriptors have the following specific forms:
|Integer:||Iw[.m], Bw[.m], Ow[.m], and Zw[.m]|
|Real and complex:||Fw.d, Ew.d[Ee], ENw.d[Ee], ESw.d[Ee], Dw.d, and Gw.d[Ee]|
The d must be specified with F, E, D, and G field descriptors even if d is zero. The decimal point is also required. You must specify both w and d, or omit them both.
A repeat specification can simplify formatting. For example, the following two statements are equivalent:
20 FORMAT (E12.4,E12.4,E12.4,I5,I5,I5,I5) 20 FORMAT (3E12.4,4I5)
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