インテル® Fortran コンパイラー 14.0 ユーザー・リファレンス・ガイド
POSIX Subroutine: Gets the real group ID of the current process.
USE IFPOSIX
CALL PXFGETGID (igid,ierror)
igid
(Output) INTEGER(4). The returned real group ID.
ierror
(Output) INTEGER(4). The error status.
If successful, ierror is set to zero; otherwise, an error code.
The real ID corresponds to the ID of the calling process.
See the example in PXFGETGROUPS