HP OpenVMS Systems Documentation
HP Fortran for OpenVMS
subroutine subprogram: A sequence of statements
starting with a SUBROUTINE (or optional OPTIONS) statement and ending
with the corresponding END statement. See also subroutine.
subscript: A scalar integer expression (enclosed in
parentheses and appended to the array name) indicating the position of
an array element. The number of subscripts is the rank of the array.
See also array element.
subscript triplet: An item in a section subscript list
specifying a range of values for the array section. A subscript triplet
contains at least one colon and has three optional parts: a lower
bound, an upper bound, and a stride. Contrast with
vector subscript. See also array
section and section subscript.
substring: A contiguous portion of a scalar character
string. Do not confuse this with the substring selector in an array
section, where the result is another array section, not a substring.
symbolic name: See name.
syntax: The formal structure of a statement or command
target: The named data object associated with a
pointer (in the form pointer-object => target). A target is declared
in a type declaration statement that contains the TARGET attribute.
See also pointer and pointer
thread: Part of a program that can run at the same
time as other parts, usually with some form of communication and/or
synchronization among the threads. See also
transformational function: An intrinsic function that
is not an elemental or inquiry function. A transformational function
usually changes an array actual argument into a scalar result or
another array, rather than applying the argument element by element.
truncation: Can be either of the following:
type declaration statement: A nonexecutable statement
specifying the data type of one or more variables: an INTEGER, REAL,
DOUBLE PRECISION, COMPLEX, DOUBLE COMPLEX, CHARACTER, LOGICAL, or TYPE
statement. Also called a type declaration or type specification.
Defines an intrinsic data type. The type parameters are kind and
length. The kind type parameter (KIND=) specifies the range for the
integer data type, the precision and range for real and complex data
types, and the machine representation method for the character and
logical data types. The length type parameter (LEN=) specifies the
length of a character string. See also kind type
unary operator: An operator that operates on one
operand. For example, the minus sign in
and the .NOT. operator in
.NOT. (J .GT. K)
underflow: An error condition occurring when the
result of an arithmetic operation yields a result that is smaller than
the minimum value in the range of a data type. For example, in unsigned
arithmetic, underflow occurs when a result is negative. See
also denormalized number.
unformatted data: Data written to a file by using
unformatted I/O statements; for example, binary numbers.
unformatted I/O statement: An I/O statement that does
not contain format specifiers and therefore does not translate the data
being transferred. Contrast with formatted I/O
unformatted record: A record that is transmitted in
internal format between internal and external storage.
unit identifier: The identifier that specifies an external unit or internal file. The identifier can be any one of the following:
Also called a device code, or logical unit number.
unspecified storage unit: A unit of storage for
holding a pointer or other scalar object of non-default intrinsic type.
upper bound: See bounds.
use association: The process by which the entities in
a module are made accessible to other scoping units (through a USE
statement in the scoping unit).
user-defined type: See derived
variable: A data object (stored in a memory location)
whose value can change during program execution. A variable can be a
named data object, an array element, an array section, a structure
component, or a substring. Contrast with
variable format expression: A numeric expression
enclosed in angle brackets (
) that can be used in a FORMAT statement. If necessary, it is converted
to integer type before use.
variable-length record type: A file format in which
records may be of different lengths.
vector subscript: A rank-one array of integer values
used as a section subscript to select elements from a parent array.
Unlike a subscript triplet, a vector subscript specifies values (within
the declared bounds for the dimension) in an arbitrary order.
Contrast with subscript triplet. See
also array section and section
whole array: An array reference (for example, in a
type declaration statement) that consists of the array name alone,
without subscript notation. Whole array operations affect every element
in the array. See also array.
zero-sized array: An array with at least one dimension that has at least one extent of zero. A zero-sized array has a size of zero and contains no elements. See also array.