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2 Intel Fortran Libraries ReferenceGETDRIVEDIRQQPortability Function: Returns the path of the current working directory on a specified drive.Module: USE IFPORTSyntaxresult = GETDRIVEDIRQQ (drivedir)drivedir(Input; output) Character*(*). On input, drive whose current working directory path is to bereturned. On output, string containing the current directory on that drive in the form d:\dir.Results:The result type is INTEGER(4). The result is the length (in bytes) of the full path of the directoryon the specified drive. Zero is returned if the path is longer than the size of the character bufferdrivedir.You specify the drive from which to return the current working directory by putting the drive letterinto drivedir before calling GETDRIVEDIRQQ. To make sure you get information about thecurrent drive, put the symbolic constant FILE$CURDRIVE (defined in IFPORT.F90) intodrivedir.Because drives are identified by a single alphabetic character, GETDRIVEDIRQQ examines onlythe first letter of drivedir. For instance, if drivedir contains the path c:\fps90\bin,GETDRIVEDIRQQ (drivedir) returns the current working directory on drive C and disregards therest of the path. The drive letter can be uppercase or lowercase.The length of the path returned depends on how deeply the directories are nested on the drivespecified in drivedir. If the full path is longer than the length of drivedir, GETDRIVEDIRQQreturns only the portion of the path that fits into drivedir. If you are likely to encounter a long path,allocate a buffer of size $MAXPATH ($MAXPATH = 260).On Linux* systems, the function gets a path only when symbolic constant FILE$CURDRIVE hasbeen applied to drivedir.CompatibilityCONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS DLL LIBSee Also: “CHANGEDRIVEQQ”, “CHANGEDIRQQ”, “GETDRIVESIZEQQ”,“GETDRIVESQQ”, “GETLASTERRORQQ”, “SPLITPATHQQ”Example! Program to demonstrate GETDRIVEDIRQQUSE IFPORTCHARACTER($MAXPATH) dirINTEGER(4) length2-112
Descriptions of the Library Routines 2! Get current directorydir = FILE$CURDRIVElength = GETDRIVEDIRQQ(dir)IF (length .GT. 0) THENWRITE (*,*) 'Current directory is: 'WRITE (*,*) dirELSEWRITE (*,*) 'Failed to get current directory'END IFENDGETDRIVESIZEQQPortability Function: Returns the total size of the specified drive and space available on it.Module: USE IFPORTSyntaxresult = GETDRIVESIZEQQ (drive, total, avail)drive(Input) Character*(*). String containing the letter of the drive to get information about.total(Output) INTEGER(4) or INTEGER(4),DIMENSION(2) or INTEGER(8). Total number of byteson the drive.avail(Output) INTEGER(4) or INTEGER(4),DIMENSION(2) or INTEGER(8). Number of bytes ofavailable space on the drive.Results:The result type is LOGICAL(4). The result is .TRUE. if successful; otherwise, .FALSE..The data types and dimension (if any) specified for the total and avail arguments must be thesame. Specifying an array of two INTEGER(4) elements, or an INTEGER(8) argument, allowsdrive sizes larger than 2147483647 to be returned.If an array of two INTEGER(4) elements is specified, the least-significant 32 bits are returned inthe first element, the most-significant 32 bits in the second element. If an INTEGER(4) scalar isspecified, the least-significant 32 bits are returned.2-113
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Overview of the Libraries 1This cha
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