HP UX Fortran Software manual So on. See also row-major order, 155

	be stored in the first location, a (2,1)in the second, a (3,1)in the third,
	and so on. See also row-major order.
core dump	A core image of an executing program that is deposited in a file after the
	program aborted execution. The core dump (also called a core file)
	may contain information that is useful in debugging the aborted program.
data dependence	The relationship that can obtain between the definition of data and its use.
	The occurrence of a data dependence in a loop can prevent the optimizer
	from parallelizing it.
division by zero	The floating-point exception that occurs whenever the system attempts to
	divide a nonzero value by zero.
driver	The component of the compiler that retains control throughout the entire
	compilation process.
dusty-deck	Older, pre-FORTRAN 77 programs. Dusty-deck programs are so called
programs	because they were presumably encoded and stored on punched cards.
	Such programs are difficult to port and optimize.
E-K
exception	A condition occurring during the execution of a program that may require
	special handling to make further execution meaningful. Some exceptions
	can be trapped by the system and handled within the program.
extension	extension See filename extension and language extension.
fast underflow	A hardware feature for handling underflow by substituting zero for the
	operation that causes the underflow.
file descriptor	An integer that is returned by certain HP-UX system I/O routines and then
	passed to others to provide access to a file. A file descriptor is similar to
	Fortran’s logical unit number. When the Fortran 90 intrinsic FNUM is given
	a logical unit number, it returns a file descriptor.
filename extension	A sequence of characters that begins with a period (.) and is added to a
	filename to indicate the function or contents of the file. See also language
	extension..
front-end	The component of the compiler that parses source code and issues warning
	and error messages. See also back-end..
High-Level	One of the optimizing components of HP Fortran 90 that performs
Optimizer	optimizations across procedures and files.
HLO	See High-Level Optimizer.
HP DDE	See HP Distributed Debugging Environment.
HP Distributed	The source-level debugger for HP Fortran 90 programs. See also dde..
Debugging
Environment
integer overflow	An exception condition that occurs when attempting to use an integer to
	represent a value that falls outside its range. The ONstatement can be used
	to trap integer overflow.
invalid operation	The floating-point exception that occurs whenever the system attempts to
	perform an operation that has no numerically meaningful interpretation,
	such as a NaN.
L-N

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