FORTRAN 77 Language Reference

Rules and Restrictions for Fields

Fields that are type declarations use the identical syntax of normal FORTRAN type statements. All f77 types are allowed, subject to the following rules and restrictions:

In a structure declaration, the offset of field n is the offset of the preceding field, plus the length of the preceding field, possibly corrected for any adjustments made to maintain alignment. See Appendix C, Data Representations for a summary of storage allocation.