DIGITAL Fortran 90
User Manual for
DIGITAL UNIX Systems

Q
qsort library routine #1
qsort library routine #2
Quotation mark character
See LRM
R
-r8 option
RAN function
See LRM; Intrinsic procedures
rand library routine
random library routine
Random number generator
library routines for #1
library routines for #2
Ranges
for complex constants
for integer constants
for logical constants
for real constants
ranlib command
rcp command
use in porting OpenVMS Fortran data
READ statement
ADVANCE specifier
deleted records
effect of -vms option
See also LRM
Reading deleted records
effect of -vms option
Readme file (online)
See Release notes
READONLY specifier
See also LRM
Real data types #1
Real data types #2
declarations and options #1
declarations and options #2
native IEEE representation
ranges #1
ranges #2
See also LRM
VAX representation
REAL declarations
options to control size of
REAL intrinsic function
options controlling size returned
See also LRM
-real_size option
REC specifier
See also LRM
RECL specifier
excluding overhead bytes
option to specify units
performance considerations
See also LRM
specifying for fixed-length records #1
specifying for fixed-length records #2
units for formatted files
units for unformatted files
Record access mode
direct
limitations by file organization and record type
OPEN statement specifiers
sequential
Record I/O
ADVANCE specifier
advancing and nonadvancing
amount of data transferred by I/O statements
available I/O statements and forms
buffers and disk I/O
data transfer
END specifier
EOR specifier
flush buffers (library routine) #1
flush buffers (library routine) #2
in internal files
length
effect on performance
locking records
maximum length
overhead bytes
performance
position
record types
reposition file (library routine) #1
reposition file (library routine) #2
SIZE specifier
statement specifiers
Record length
INQUIRE statement
maximum
RECORD statement
and data alignment
causes of unaligned data
See also LRM
Record structures
accessing variables in the debugger
alignment of
memory diagrams of
options controlling alignment
order of data in
See also LRM
storage of
Record type
available file organizations
choosing for optimal run-time performance
converting nonnative data
OPEN statement defaults
See also LRM
declaring
See LRM
fixed-length #1
fixed-length #2
general description
importance of specifying in OPEN statement
limitations on access modes
maximum record length
OpenVMS Fortran portability considerations
overhead
portability considerations #1
portability considerations #2
porting data with OpenVMS systems
segmented #1
segmented #2
stream #1
stream #2
differences with OpenVMS systems
stream_CR #1
stream_CR #2
stream_LF #1
stream_LF #2
variable-length #1
variable-length #2
VAX FORTRAN portability considerations
Records
record types
RECORDTYPE specifier #1
RECORDTYPE specifier #2
See also LRM
Recursion
options related to
See also LRM
-recursive option
REDUCTION clause
for DO directive #1
for DO directive #2
for DO directive #3
for PARALLEL directive #1
for PARALLEL directive #2
for PARALLEL directive #3
for PARALLEL DO directive #1
for PARALLEL DO directive #2
for PARALLEL SECTIONS directive #1
for PARALLEL SECTIONS directive #2
for SECTIONS directive #1
for SECTIONS directive #2
for SECTIONS directive #3
Reduction operators and intrinsics
initialization values
REDUCTION option
for PARALLEL DO directive
for PDO directive #1
for PDO directive #2
-reentrancy keyword option
Reentrant program
threaded execution #1
threaded execution #2
threaded execution #3
Reference pages
and man command
for 3f and 3hpf library routines
References
See also LRM; EXTERNAL statement; USE statement
unresolved (linker)
Register usage
and listing of assembler code
array index
display by debugger
effect of optimization
effect of VOLATILE statement
holding variables
option to create assembler file
option to create assembler listing
Relational operators
See also LRM
use in debugging
Relative file
access modes
general description
record types for
specifying
importance of OPEN statement specifiers
See OPEN statement; LRM
specifying RECL when creating
Release notes
displaying
Removal optimizations #1
Removal optimizations #2
rename library routine
RESHAPE intrinsic procedure
Resolving dependences
loop-carried
manually
using temporary variables
Restructuring a loop
Return values
from f90 command to shell
from Run-Time Library to shell
See also Error handling; Function return values
REWIND statement #1
REWIND statement #2
See also LRM
REWRITE statement
See also LRM
rindex library routine
Rounding modes
floating-point calculations
rshift library routine
Run-Time Library (RTL)
and implied-DO loop collapsing #1
and implied-DO loop collapsing #2
error processing performed by
message catalog location
requesting threaded execution #1
requesting threaded execution #2
requesting threaded execution #3
requesting threaded execution #4
requesting threaded execution #5
See also Library routines
transporting message file
use from C programs (routines)
using latest version for run-time efficiency
values returned to shell
Run-time parallel environment
adjusting
RUNTIME schedule type #1
RUNTIME schedule type #2
RUNTIME schedule type #3
RUNTIME schedule type #4