HP Fortran for OpenVMS
User Manual

B
BACKSPACE statement #1
BACKSPACE statement #2
Basic linear algebra routines (Compaq Extended Math Library)
Batch job
compiler errors during
effect on /LIST qualifier default
Bit manipulation functions
See LRM
$BLANK program section
use and attributes
BLANK specifier
Compaq Fortran 77 differences
See also LRM
BLAS routines (Compaq Extended Math Library)
Block IF statement
nesting limit
See also LRM
BLOCKSIZE specifier #1
BLOCKSIZE specifier #2
See also LRM
Bottleneck
reduction of I/O
$BSS$ program section
use and attributes
BUFFERCOUNT specifier #1
BUFFERCOUNT specifier #2
See also LRM
Buffers
for record I/O
Built-in functions
%DESCR function
%LOC function
%REF function
See also LRM; cDEC$ ATTRIBUTES
used in passing arguments
%VAL function
/BY_REF_CALL qualifier
C
C language
argument passing with HP Fortran
examples #1
examples #2
examples #3
calling between HP Fortran and C #1
calling between HP Fortran and C #2
compiling programs
example array passing
example of function call by HP Fortran #1
example of function call by HP Fortran #2
example of function call by HP Fortran #3
handling arrays
See also Argument passing; Language interfaces
Call stack
use by CHF
CALL statement
maximum arguments allowed
See also LRM
used to call system services
Calling interface
See Argument passing; Language interface
CARRIAGECONTROL specifier #1
CARRIAGECONTROL specifier #2
CARRIAGECONTROL specifier #3
effect of /CCDEFAULT qualifier
See also LRM
Case sensitive
external names in C
controlling with cDEC$ directives #1
controlling with cDEC$ directives #2
Case-sensitive names
flagging lowercase (/STANDARD)
option controlling
Catchall condition handler
/CCDEFAULT qualifier
CDD
See also CDDL
CDD/Repository
accessing from HP Fortran programs
CDD records
including in source listing
data types
See also CDDL (Common Data Dictionary Language)
See also CDO (Common Data Dictionary Operator)
CDDL (Common Data Dictionary Language)
cDEC$ ALIAS directive
cDEC$ ATTRIBUTES
ADDRESS64 directive
ALIAS directive
C directive
example
EXTREN directive
REFERENCE directive
VALUE directive
VARYING directive
cDEC$ ATTRIBUTES directive
cDEC$ directives #1
cDEC$ directives #2
cDEC$ OPTIONS directive
and alignment
cDEC$ PSECT directive
changing attributes
CDO (Common Data Dictionary Operator)
data types
definition
using
Cells
in relative files
CHAR intrinsic
CHAR intrinsic procedure
to null-terminate a C string
CHARACTER
data type
representation
See also LRM
Character arguments
constant actual arguments
passing between HP Fortran and C
Character data
checking for out-of-bounds references
constant actual arguments
using whole character string operations for run-time efficiency
Character set
See LRM #1
See LRM #2
Characters
flagging lowercase (/STANDARD)
/CHECK qualifier
ALL keyword
ARG_INFO (I64 only) keyword
ARG_INFO keyword (I64 only)
ARG_TEMP_CREATED keyword
BOUNDS keyword
FORMAT keyword
FP_EXCEPTIONS keyword
FP_MODE (I64 only) keyword
FP_MODE keyword (I64 only)
NONE keyword
OUTPUT_CONVERSION keyword
OVERFLOW keyword
POWER keyword
UNDERFLOW keyword
CHF
See Condition-Handling Facility (CHF); Condition-handler routines
$CHFDEF library module
in FORSYSDEF #1
in FORSYSDEF #2
Close operations
CLOSE statement #1
CLOSE statement #2
closing a file using RMS
CLOSE statement #1
CLOSE statement #2
See also LRM
CMPLX intrinsic function
qualifier controlling size returned
See also LRM
Code generation
for specific Alpha processor generation
Code hoisting
in divide operations
in optimization
$CODE$ program section
use and attributes
COM file type
Command line
abbreviating list of input files
abbreviating qualifier names and keywords
consistent use of qualifiers for multiple compilations
differences from Compaq Fortran 77 for OpenVMS VAX Systems
See also Compiler options; FORTRAN command; LINK command; DEBUG command; DEFINE command; DEASSIGN command
specifying multiple keywords for a qualifier
Command procedures
returning status values to
to measure run-time performance
Comment lines
D in column 1 (/D_LINES)
See also LRM
Common blocks
accessing variables in debugger
alignment of data in
causes of misalignment
changing program section attributes
installed
creation, installation, and use
synchronizing access
order of data in
program section (PSECT) attributes
qualifiers controlling alignment
See also LRM #1
See also LRM #2
shared interprocess
example
use of VOLATILE statement
Common Data Dictionary
See CDD; CDDL
COMMON statement
and data-flow and split lifetime analysis
causes of misalignment
data alignment #1
data alignment #2
See also LRM; Common block
Common subexpression elimination
Communications, network task-to-task
Compaq Extended Math Library
See CXML
Compaq Fortran 77
compiler diagnostic detection differences
for OpenVMS Alpha systems
argument passing
calling between HP Fortran
I/O to same unit number
passing aligned data
passing common block values
passing pointers
passing same size data
for OpenVMS I64 and Alpha systems
compiler detection differences
for OpenVMS I64 and Alpha systems
language features not supported
for OpenVMS VAX systems
compatibility
equivalent record types
floating-point format differences
FORTRAN command qualifier
language features not supported
porting data
VAX H_float representation
other platforms
language compatibility (summary)
record type portability
request Fortran 77 compiler (/OLD_F77)
Compaq Fortran 77 OpenVMS Alpha systems
mixed language example
Compatibility
DO loop minimum iteration count (/NOF77)
OPEN statement specifier defaults (/NOF77)
PARAMETER syntax (/ASSUME)
request Compaq Fortran 77 compiler (/OLD_F77)
See also LRM
translated images
FORTRAN command
LINK command #1
LINK command #2
unformatted files record length unit, RECL (/ASSUME)
with Compaq Fortran 77 for OpenVMS Alpha Systems
command line
with Compaq Fortran 77 for OpenVMS Alpha Systems
feature summary
with Compaq Fortran 77 for OpenVMS Alpha Systems
I/O compatibility
language features #1
language features #2
language features #3
request Fortran 77 compiler (/OLD_F77)
with Compaq Fortran 77 for OpenVMS VAX systems
architectural differences
with Compaq Fortran 77 for OpenVMS VAX Systems
command line
with Compaq Fortran 77 for OpenVMS VAX Systems
converting data
with Compaq Fortran 77 for OpenVMS VAX Systems
feature summary
with Compaq Fortran 77 for OpenVMS VAX Systems
interpretation differences
with Compaq Fortran 77 for OpenVMS VAX Systems
language features #1
language features #2
language features #3
porting data
record types
with Compaq Fortran 77 for OpenVMS VAX Systems
translated images
/VMS qualifier
with Compaq Visual Fortran (CVF)
feature summary
with HP Fortran for Tru64 UNIX systems
feature summary
record types
with HP Fortran on other platforms
Compile-time operations #1
Compile-time operations #2
Compiler
assumptions (/ASSUME)
coding restrictions summary of
data format assumptions (/CONVERT)
data format assumptions (/FLOAT)
data porting assumptions
default file names
effect of directives on performance
effect of optimization level on compilation time and object file size
functions
input to linker
limits
messages issued by
compiler-fatal messages
general description
limiting
source program messages
process memory size
process open file limit
request Compaq Fortran 77 compiler (/OLD_F77)
request threaded run-time execution
See also FORTRAN command
using latest version for run-time efficiency
Compiler directives
cDEC$ ALIAS
cDEC$ ATTRIBUTES
cDEC$ OPTIONS directive
cDEC$ PSECT
OPTIONS statement #1
OPTIONS statement #2
See also LRM
Compiler options
accuracy
checking overflow, bounds, underflow (/CHECK)
dummy variable use (/ASSUME)
floating-point calculations (/ASSUME)
floating-point format (/FLOAT)
handling of single-precision constants (/ASSUME)
IEEE exception handling (/IEEE_MODE)
IEEE rounding mode (/ROUNDING_MODE)
math routines used (/MATH_LIBRARY)
REAL and COMPLEX declarations (/REAL_SIZE)
set multiple qualifiers (/FAST)
size of DOUBLE PRECISION declarations (/DOUBLE_SIZE)
Alpha processor code generation (/ARCHITECTURE)
arguments
case sensitivity of external names (/NAMES)
character constant actual arguments
dummy variable use (/ASSUME)
code generation for Alpha processor (/ARCHITECTURE)
Compaq Fortran 77 for OpenVMS VAX Systems specific
compatibility
Compaq Fortran 77 compiler (/OLD_F77)
Compaq Fortran 77 for OpenVMS VAX Systems (/VMS)
data alignment errors
dummy arguments (/ASSUME)
floating-point constants (/ASSUME)
FORTRAN 66 processing (/F77)
Fortran 90 standard conformance (/STANDARD)
Fortran 95 standard conformance (/STANDARD)
integer constants (/ASSUME)
pad source lines with spaces (/PAD_SOURCE)
PARAMETER syntax (/ASSUME)
requesting compiler diagnostics (/WARNINGS)
translated images (/TIE)
unformatted files record length unit, RECL (/ASSUME)
compatibility with Compaq Fortran 77 for OpenVMS VAX Systems
data
alignment (/ALIGNMENT)
automatic storage (/AUTOMATIC)
DOUBLE PRECISION declaration size (/DOUBLE_SIZE)
floating-point constants (/ASSUME)
IEEE exception handling (/IEEE_MODE)
IEEE floating-point value of -0.0 (/ASSUME)
IEEE rounding mode (/ROUNDING_MODE)
INTEGER and LOGICAL declaration size (/INTEGER_SIZE)
integer constants (/ASSUME)
memory floating-point data type (/FLOAT)
REAL and COMPLEX declaration size (/REAL_SIZE)
recursive procedures (/RECURSIVE)
shared memory granularity (/GRANULARITY)
unformatted file data types (/CONVERT)
unformatted files record length unit, RECL (/ASSUME)
debugging
fixed-form source (/D_LINES)
/OPTIMIZE
suggested /OPTIMIZE use
symbol table and traceback (/DEBUG)
files
directory search for include or module files (/INCLUDE)
directory to place module files
DML preprocessing (/DML)
locating and placing include files
object file (/OBJECT)
request listing file (/LIST)
requesting analysis file (/ANALYSIS_DATA)
requesting diagnostic file (/DIAGNOSTICS)
specify text library file (/LIBRARY)
using module (F90$MOD) files
fixed-form source
D in column 1 (/D_LINES)
pad source lines with spaces (/PAD_SOURCE)
source line length (/EXTEND_SOURCE)
specify source form (/SOURCE_FORM)
functional groups of qualifiers
listing file
controlling contents of (/SHOW)
object code listing (/MACHINE_CODE)
request listing file (/LIST)
messages
accurate reporting of exceptions (/SYNCHRONOUS_EXCEPTIONS)
changing severity of (/SEVERITY)
limiting (/ERROR_LIMIT qualifier)
requesting additional (/WARNINGS)
requesting fewer (/WARNINGS)
run-time checking (/CHECK)
standard conformance (/STANDARD)
not available in Compaq Fortran 77 for OpenVMS VAX Systems
object file
name (/OBJECT)
one or multiple modules in object file (/SEPARATE_COMPILATION)
prevent creation of (/NOOBJECT)
symbol table and traceback (/DEBUG)
translated images (/TIE)
only check for syntax (/SYNTAX_ONLY)
optimization (/OPTIMIZE)
output buffer use (/ASSUME)
pad source lines with spaces (/PAD_SOURCE)
performance
alignment (/ALIGNMENT)
controlling Alpha code generation (/ARCHITECTURE)
floating-point calculations (/ASSUME)
floating-point format (/FLOAT)
IEEE exception handling (/IEEE_MODE)
INTEGER and LOGICAL defaults (/INTEGER_SIZE)
math routines used (/MATH_LIBRARY)
optimization (/OPTIMIZE)
set multiple qualifiers (/FAST)
summary
recursive procedures (/RECURSIVE)
reentrancy during RTL calls (/REENTRANCY)
run-time checking
accurate reporting of exceptions (/SYNCHRONOUS_EXCEPTIONS)
IEEE exception handling (/IEEE_MODE)
requesting additional (/CHECK)
See also FORTRAN command
version number (/VERSION)
Compiler summary
output listing section
Compiling C language programs
Completion status values
returning to command procedure
Complex data types #1
Complex data types #2
Complex data types #3
declarations and qualifiers
native representation
ranges
See also LRM
VAX representation
COMPLEX declarations
option to control size of
Condition-handler routines
catchall condition handler
checking for arithmetic exceptions #1
checking for arithmetic exceptions #2
checking for data alignment traps
coding requirements
converting signal to return status
LIB$SIG_TO_RET
definition of
establishing handlers
LIB$ESTABLISH
examples of use
matching condition values
LIB$MATCH_COND
removing handlers
LIB$REVERT
return values
SS$_CONTINUE
SS$_RESIGNAL
returning from a handler
See also Condition-Handling Facility (CHF); Error handling
signaling exception conditions
LIB$SIGNAL or LIB$STOP
terminating handling for signals
LIB$SIG_TO_STOP
traceback condition handler
unwinding the call stack
SYS$UNWIND
user written
use of variables
values and symbols passed
Condition-Handling Facility (CHF)
default condition handlers
overview
See also Condition-handler routines
use of call stack
Condition signals
changing to return status
LIB$SIG_TO_RET
Condition symbols, Fortran
summary of
Constant operation
See Compile-time operations
Constants
alternate PARAMETER syntax (/ASSUME)
character actual arguments
floating-point
double precision
maximum size
ranges
See also LRM
CONTAINS statement
See also LRM
Continuation lines
maximum allowed
See also LRM
CONTINUE command (DCL)
/CONVERT qualifier #1
/CONVERT qualifier #2
/CONVERT qualifier #3
BIG_ENDIAN keyword
CRAY keyword
FDX keyword
FGX keyword
IBM keyword
LITTLE_ENDIAN keyword
NATIVE keyword
VAXD keyword
VAXG keyword
CONVERT specifier #1
CONVERT specifier #2
See also LRM
Cross-reference information
linking
/CROSS_REFERENCE qualifier
Ctrl/C
handling
example routine #1
example routine #2
handling routine
interrupting interactive program execution
Ctrl/Y
interrupting interactive program execution
CVT$CONVERT_FLOAT
example use
CXML
example program
groups of routines
linking
types of libraries provided
CXML library
for efficient run-time performance