IntelÂ® Fortran Libraries Reference

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2 Intel Fortran Libraries ReferencePXFCLOSEDIRPOSIX Subroutine: Closes the directory stream.Module: USE IFPOSIXSyntaxCALL PXFCLOSEDIR (idirid, ierror)idirid(Input) INTEGER(4) on IA-32 processors; INTEGER(8) on Intel Itanium processors. Thedirectory ID obtained from PXFOPENDIR.ierror(Output) INTEGER(4). The error status.If successful, ierror is set to zero; otherwise, an error code.The PXFCLOSEDIR subroutine closes the directory associated with idirid.CompatibilityCONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIBSee Also: “PXFOPENDIR”PXFCNTLPOSIX Subroutine: Manipulates an open file descriptor. This subroutine is only available onLinux* systems.Module: USE IFPOSIXSyntaxCALL PXFCNTL (ifildes, icmd, iargin, iargout, ierror)ifildes(Input) INTEGER(4). A file descriptor.icmd(Input) INTEGER(4). Defines an action for the file descriptor.iargin(Input; output) INTEGER(4) on IA-32 processors; INTEGER(8) on Intel Itanium processors.Interpretation of this argument depends on the value of icmd.iargout(Output) INTEGER(4). Interpretation of this argument depends on the value of icmd.2-274
Descriptions of the Library Routines 2ierror(Output) INTEGER(4). The error status.If successful, ierror is set to zero; otherwise, an error code.PXFFCNTL is a multi-purpose subroutine that causes an action to be performed on a filedescriptor. The action, defined in icmd, can be obtained by using the values of predefined macrosin C header fcntl.h, or by using PXFCONST or IPXFCONST with one of the following constantnames:ConstantF_DUPFDF_GETFDF_SETFDF_GETFLF_SETFLF_GETLKF_SETLKActionReturns into iargout the lowest available unopened file descriptor greater than orequal to iargin. The new file descriptor refers to the same open file as ifildes andshares any locks. The system flag FD_CLOEXEC for the new file descriptor iscleared so the new descriptor will not be closed on a call to PXFEXEC subroutine.Returns into iargout the value of system flag FD_CLOEXEC associated with ifildes.In this case, iargin is ignored.Sets or clears the system flag FD_CLOEXEC for file descriptor ifildes. ThePXFEXEC family of functions will close all file descriptors with the FD_CLOEXECflag set. The value for FD_CLOEXEC is obtained from argument iargin.Returns the file status flags for file descriptor ifildes. Unlike F_GETFD, these flagsare associated with the file and shared by all descriptors. A combination of thefollowing flags, which are symbolic names for PXFCONST or IPXFCONST, can bereturned:• O_APPEND – Specifies the file is opened in append mode.• O_NONBLOCK – Specifies when the file is opened, it does not block waitingfor data to become available.• O_RDONLY – Specifies the file is opened for reading only.• O_RDWR – Specifies the file is opened for both reading and writing.• O_WRONLY – Specifies the file is opened for writing only.Sets the file status flags from iargin for file descriptor ifildes. Only O_APPEND orO_NONBLOCK flags can be modified. In this case, iargout is ignored.Gets information about a lock. Argument iargin must be a handle of structureflock. This structure is taken as the description of a lock for the file.If there is a lock already in place that would prevent this lock from being locked, it isreturned to the structure associated with handle iargin. If there are no locks inplace that would prevent the lock from being locked, field l_type in the structure isset to the value of the constant with symbolic name F_UNLCK.Sets or clears a lock. Argument iargin must be a handle of structure flock. Thelock is set or cleared according to the value of structure field l_type. If the lock isbusy, an error is returned.2-275
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