Chapter 1 FORTRAN Library Routines

This chapter describes the Fortran library routines alphabetically. See the FORTRAN 77 Language Reference for details on Fortran 77 and VMS intrinsic functions. All the routines described in this chapter have corresponding man pages in section 3F of the man library. For example, man -s 3F access will display the man page entry for the library routine access.

Indice
	Data Type Considerations
	64-Bit Environments
	abort: Terminate and Write Core File
	access: Check File Permissions or Existence
	alarm: Call Subroutine After a Specified Time
	bit: Bit Functions: and, or, ..., bit, setbit, ...
	chdir: Change Default Directory
	chmod: Change the Mode of a File
	date: Get Current Date as a Character String
	date_and_time: Get Date and Time
	dtime, etime: Elapsed Execution Time
	exit: Terminate a Process and Set the Status
	fdate: Return Date and Time in an ASCII String
	flush: Flush Output to a Logical Unit
	fork: Create a Copy of the Current Process
	free: Deallocate Memory Allocated by Malloc
	fseek, ftell: Determine Position and Reposition a File
	fseeko64, ftello64: Determine Position and Reposition a Large File
	getarg, iargc: Get Command-line Arguments
	getc, fgetc: Get Next Character
	getcwd: Get Path of Current Working Directory
	getenv: Get Value of Environment Variables
	getfd: Get File Descriptor for External Unit Number
	getfilep: Get File Pointer for External Unit Number
	getlog: Get User's Login Name
	getpid: Get Process ID
	getuid, getgid: Get User or Group ID of Process
	hostnm: Get Name of Current Host
	idate: Return Current Date
	ieee_flags,ieee_handler, sigfpe: IEEE Arithmetic
	index,rindex,lnblnk: Index or Length of Substring
	inmax: Return Maximum Positive Integer
	ioinit: Initialize I/O Properties
	itime: Current Time
	kill: Send a Signal to a Process
	libm Math Functions
	link, symlnk: Make a Link to an Existing File
	loc: Return the Address of an Object
	long, short: Integer Object Conversion
	longjmp, isetjmp: Return to Location Set by isetjmp
	malloc, malloc64: Allocate Memory and Get Address
	mvbits: Move a Bit Field
	perror, gerror, ierrno: Get System Error Messages
	putc, fputc: Write a Character to a Logical Unit
	qsort,qsort64: Sort the Elements of a One-dimensional Array
	ran: Generate a Random Number between 0 and 1
	rand, drand, irand: Return Random Values
	rename: Rename a File
	secnds: Get System Time in Seconds, Minus Argument
	sh: Fast Execution of an sh Command
	signal: Change the Action for a Signal
	sleep: Suspend Execution for an Interval
	stat, lstat, fstat: Get File Status
	stat64, lstat64, fstat64: Get File Status
	system: Execute a System Command
	time, ctime, ltime, gmtime: Get System Time
	topen, tclose, tread,..., tstate: Tape I/O
	ttynam, isatty: Get Name of a Terminal Port
	unlink: Remove a File
	wait: Wait for a Process to Terminate