FORTRAN, Statements, Directive Statements
*Conan The Librarian (sorry for the slow response - running on an old VAX)
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VMS Help FORTRAN, Statements, Directive Statements *Conan The Librarian (sorry for the slow response - running on an old VAX) |
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CDEC$ ALIAS name, external-name CDEC$ ASSERT (e) CDEC$ END OPTIONS (see CDEC$ OPTIONS) CDEC$ IDENT string CDEC$ INIT_DEP_FWD CDEC$ NOVECTOR CDEC$ OPTIONS /qual... CDEC$ PSECT /common-name/ attr [,attr,...] CDEC$ SUBTITLE string CDEC$ TITLE string CPAR$ CONTEXT_SHARED var_name[,...,var_name] CPAR$ CONTEXT_SHARED_ALL CPAR$ DO_PARALLEL [distribution-size] CPAR$ LOCKON lock-variable CPAR$ LOCKOFF lock-variable CPAR$ PRIVATE name[,...,name] CPAR$ PRIVATE_ALL CPAR$ SHARED common_name[,...,common_name] CPAR$ SHARED_ALL You can use directives in a Fortran source program to influence certain aspects of the compilation process. Directives are prefixed, starting in column 1, with a 5-character identifier and a space (or tab). Directives prefixed with CDEC$ are enabled in all Fortran compilation units, regardless of the qualifiers used on the FORTRAN command line. Directives may also be prefixed with a first character of ! (!DEC$ or !PAR$) in any column of a source line as long as only whitespace (blanks or tabs) precedes the directive prefix. Directives prefixed with CPAR$ are enabled only in Fortran compilation units involved in parallel processing (that is, when the /PARALLEL qualifier is specified on the FORTRAN command line). If the /PARALLEL qualifier is not specified, parallel-processing directives (CPAR$ directives) are interpreted as comment lines. A directive statement cannot be continued across multiple lines in a source program, and any blanks appearing after column 6 are insignificant. Continuation lines cannot appear in directive statements. If a blank common block is used in a compiler directive, it must be specified as two slashes (/ /).
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