Compaq Fortran
User Manual for
Tru64 UNIX and Linux Alpha Systems

T
TASKCOMMON directive #1
TASKCOMMON directive #2
TASKCOMMON directive #3
-taso option
Temporary files
created by f90
directory used by f90
retaining with f90
TMPDIR environment variable used by f90
Temporary variables
using PRIVATE clause
Terminating loop execution early
Threaded program execution
alignment requirements
parallel processing #1
parallel processing #2
related command-line options #1
related command-line options #2
requesting #1
requesting #2
requesting #3
VOLATILE statement
THREADPRIVATE directive #1
THREADPRIVATE directive #2
THREADPRIVATE directive #3
THREADPRIVATE directive #4
-threads option
Tilde character (~)
in pathname
Time
returning (library routine) #1
returning (library routine) #2
returning (library routine) #3
returning (library routine) #4
returning (library routine) #5
returning (library routine) #6
returning (library routine) #7
returning (library routine) #8
returning (library routine) #9
time library routine
Timing program execution
using routines #1
using routines #2
using routines #3
using shell commands
TMPDIR environment variable
use during compilation #1
use during compilation #2
use with scratch files
tracepoint
-transform_loops option
Transportability
See also Compatibility; Data, converting unformatted files
ttynam library routine
-tune host option
effect of -fast option
-tune option #1
-tune option #2
TYPE specifier
See also LRM
TYPE statement
See also LRM
U
-U option
UBOUND intrinsic
umask library routine
Unaligned data
causes
checking for
compiler
error messages
compiler
run-time
See also Alignment
using debugger to locate
-Uname option #1
-Uname option #2
-Uname option (cpp)
Unformatted data
and DO loop collapsing
and I/O statements
and nonnative numeric formats
efficient run-time performance
Unformatted files
converting nonnative data
record type
methods of specifying endian format
obtaining numeric specifying format
specifying format
using command option to specify format
using command option to specify RECL units
using -convert option to specify format
using environment variable method to specify format #1
using environment variable method to specify format #2
using OPEN Statement CONVERT='keyword' method to specify format
using OPTIONS statement /CONVERT to specify format
Unformatted I/O statements
See also LRM
UNIT specifier #1
UNIT specifier #2
UNIT specifier #3
See also LRM
unlink library routine
UNLOCK statement
See also LRM
Unresolved references
-unroll num option #1
-unroll num option #2
unset command (Bourne and Korn and bash shells) #1
unset command (Bourne and Korn and bash shells) #2
unsetenv command (C shell)
USE statement #1
USE statement #2
See also LRM
User-defined (derived) type data
causes of unaligned data
options controlling alignment #1
options controlling alignment #2
USEROPEN function
argument passing
example calling program (Fortran 95/90)
example program (C)
file descriptor requirements
for sockets
routines available to open the file #1
routines available to open the file #2
USEROPEN specifier #1
USEROPEN specifier #2
See also LRM
Utility routines (Compaq Extended Math Library)
V
-V option
-v option
-V option
example #1
example #2
Value propagation #1
Value propagation #2
Variable format expression
Variable-length records #1
Variable-length records #2
OpenVMS data compatibility
portability considerations
use for optimal performance
Variables
accessing in debugger
alignment #1
alignment #2
assigned but never used
Fortran complex
See also LRM
treatment as automatic or static
related options #1
related options #2
related options #3
related options #4
used before value assigned
option controlling warning message
Variables declared in other languages, accessing
VAX FORTRAN
See also Compaq Fortran 77; VAX systems
VAX systems
Compaq Fortran 77 (OpenVMS)
extensions not supported
floating-point data comparison
floating-point data conversion guidelines
floating-point data representation
porting floating-point data
converting data to IEEE formats #1
converting data to IEEE formats #2
floating-point data
COMPLEX
COMPLEX*16
converting #1
converting #2
D_float
F_float
G_float
H_float
representation
options for Fortran compatibility (f90)
Vector mathematics (Compaq Extended Math Library)
-version option
Virtual memory
allocating and freeing (library routine)
-vms option
effect on -align records
effect on other options
VMS systems
See also VAX systems; OpenVMS Fortran
VOLATILE statement
and data-flow and split lifetime analysis
and granularity
and implied-DO loop collapsing
for threaded applications
See also LRM
use with %LOC
when to use
W
-w option
wait library routine
-warn argument_checking option
-warn declarations option
-warn hpf option
-warn noalignments option
-warn nogranularity option
-warn nouncalled option
-warn nouninitialized option
-warn nounused option
-warn nousage option
-warn truncated_source option
-warn uncalled option
-warn unused option
-warn usage option
Warning messages
about a variable declared but never used
about questionable programming practices
about statement functions never called
alignment (compile-time)
alignment (run-time)
argument checking (compile-time)
arithmetic exception handling (run-time) #1
arithmetic exception handling (run-time) #2
floating-point underflow (run-time) #1
floating-point underflow (run-time) #2
format mismatches (run-time)
format truncation (run-time)
integer overflow (run-time)
language dialects (compile-time)
limiting (compile-time) #1
limiting (compile-time) #2
nonprinting ASCII characters (compile-time)
parallel compiler directives, binding rules
raising severity (compile-time)
requesting additional (compile-time) #1
requesting additional (compile-time) #2
standards checking (compile-time)
suppressing all (compile-time) #1
suppressing all (compile-time) #2
suppressing NONGRNACC
undeclared variable use (compile-time)
use of two digits for year 2000
variables used before value assigned (compile-time)
-warning_severity option
watchpoint
-what option
-Wl,-xxx option
Worksharing constructs #1
Worksharing constructs #2
-Wp,-xxx option
WRITE statement
ADVANCE specifier
See also LRM
-wsf or -wsf nn option
and -std option
profiling option #1
profiling option #2
requirements for multiple compile units