- Data Type Considerations
- abort: Terminate and Write Memory to Core File
- access: Check File for Permissions or Existence
- alarm: Execute a Subroutine after a Specified Time
- bit: Bit Functions: and, or, ..., bit, setbit, ...
- Usage: and, or, xor, not, rshift, lshift
- Usage: bic, bis, bit, setbit
- chdir: Change Default Directory
- chmod: Change the Mode of a File
- date: Get Current System Date as a Character String
- dtime, etime: Elapsed Execution Time
- dtime: Elapsed Time Since the Last dtime Call
- etime: Elapsed Time Since Start of Execution
- 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
- fseek: Reposition a File on a Logical Unit
- ftell: Return Current Position of File
- getarg, iargc: Get Command-line Arguments
- getarg: Get the kth Command-Line Argument
- iargc: Get the Number of Command-Line Arguments
- getc, fgetc: Get Next Character
- getc: Get Next Character from stdin
- fgetc: Get Next Character from Specified Logical Unit
- 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
- getuid: Get User ID of the Process
- getgid: Get Group ID of the Process
- hostnm: Get Name of Current Host
- idate: Return Current System Date
- ieee_flags,ieee_handler,sigfpe: IEEE Arithmetic
- f77_floatingpoint.h: Fortran IEEE Definitions
- index,rindex,lnblnk: Index or Length of Substring
- index: First Occurrence of String a2 in String a1
- rindex: Last Occurrence of String a2 in String a1
- lnblnk: Last Nonblank in String a1
- inmax: Return Maximum Positive Integer
- ioinit: Initialize I/O: Carriage Control, File Names, ...
- Duration of File I/O Properties
- Internal Flags
- Source Code
- Usage: ioinit
- Restrictions
- Details of Arguments
- itime: Current System Time
- kill: Send a Signal to a Process
- libm_double: libm Double-Precision Functions
- Intrinsic Functions
- Non-Intrinsic Functions
- libm_quadruple: libm Quad-Precision Functions
- Intrinsic Functions
- Non-Intrinsic Functions
- libm_single: libm Single-Precision Functions
- Intrinsic Functions
- Non-Intrinsic Functions
- link, symlnk: Make a Link to an Existing File
- link: Create a Link to an Existing File
- symlnk: Create a Symbolic Link to an Existing File
- loc: Return the Address of an Object
- long, short: Integer Object Conversion
- long: Convert a Short Integer to a Long Integer
- short: Convert a Long Integer to a Short Integer
- longjmp, isetjmp: Return to Location Set by isetjmp
- isetjmp: Set the Location for longjmp
- longjmp: Return to the location set by isetjmp
- Description
- Restrictions
- malloc: Allocate Memory and Get Address
- mvbits: Move a Bit Field
- perror, gerror, ierrno: Get System Error Messages
- perror: Print Message to Logical Unit 0, stderr
- gerror: Get Message for Last Detected System Error
- ierrno: Get Number for Last Detected System Error
- putc, fputc: Write a Character to a Logical Unit
- putc: Write to Logical Unit 6
- fputc: Write to Specified Logical Unit
- qsort: 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
- stat: Get Status for File, by File Name
- fstat: Get Status for File, by Logical Unit
- lstat: Get Status for File, by File Name
- Detail of Status Array for Files
- system: Execute a System Command
- time, ctime, ltime, gmtime: Get System Time
- time: Get System Time
- ctime: Convert System Time to Character
- ltime: Split System Time to Month, Day,... (Local)
- gmtime: Split System Time to Month, Day, ... (GMT)
- topen, tclose, tread,..., tstate: Tape I/O
- topen: Associate a Device with a Tape Logical Unit
- tclose: Write EOF, Close Tape Channel, Disconnect tlu
- twrite: Write Next Physical Record to Tape
- tread: Read Next Physical Record from Tape
- trewin: Rewind Tape to Beginning of First Data File
- tskipf: Skip Files and Records; Reset EoF Status
- tstate: Get Logical State of Tape I/O Channel
- ttynam, isatty: Get Name of a Terminal Port
- ttynam: Get Name of a Terminal Port
- isatty: Is this Unit a Terminal?
- unlink: Remove a File
- wait: Wait for a Process to Terminate
