PGI Fortran Reference manual - The Portland Group

3F Functions and VAX SubroutinesThe return value is the previous action. If this is a value greater than one, then it is the address ofa routine that was to have been called. The return value can be used in subsequent calls to signalto restore a previous action. A negative return value indicates a system error.9.1.59. sleepSuspend execution for a period of time.Synopsissubroutine sleep(itime)integer itimeDescriptionSuspends the process for t seconds.9.1.60. stat, lstat, fstat, fstat64Get file status.Synopsisinteger function stat(nm, statb)character*(*) nminteger statb(*)integer function lstat(nm, statb)character*(*) nminteger statb(*)integer function fstat(lu, statb)integer luinteger statb(*)integer function fstat64(lu, statb)integer luinteger*8 statb(*)DescriptionReturn the file status of the file in the array statb. If successful, zero is returned; otherwise, thevalue of -1 is returned. stat obtains information about the file whose name is nm; if the file is asymbolic link, information is obtained about the file the link references. lstat is similar to statexcept lstat returns information about the link. fstat obtains information about the file which isconnected to logical unit lu.9.1.61. stimeSet time.PGI Fortran Reference Guide 209