Integer, Intent (In)	::	lencw, leniw, lenrw
Integer, Intent (Inout)	::	ifail
Integer, Intent (Out)	::	iw(leniw)
Real (Kind=nag_wp), Intent (Out)	::	rw(lenrw)
Character (8), Intent (Out)	::	cw(lencw)

C Header Interface

#include <nag.h>

void	e04vgf_ (char cw[], const Integer lencw, Integer iw[], const Integer leniw, double rw[], const Integer lenrw, Integer ifail, const Charlen length_cw)

The routine may be called by the names e04vgf or nagf_opt_nlp2_sparse_init.

3 Description

e04vgf initializes the arrays cw, iw and rw for the routine e04vhf.

4 References

None.

5 Arguments

1: $cw (lencw)$ – Character(8) array Communication Array
2: $lencw$ – Integer Input: On entry: the dimension of the array cw as declared in the (sub)program from which e04vgf is called.

Constraint: $lencw \geq 600$ , see routine e04vhf.
3: $iw (leniw)$ – Integer array Communication Array
4: $leniw$ – Integer Input: On entry: the dimension of the array iw as declared in the (sub)program from which e04vgf is called.

Constraint: $leniw \geq 600$ , see routine e04vhf.
5: $rw (lenrw)$ – Real (Kind=nag_wp) array Communication Array
6: $lenrw$ – Integer Input: On entry: the dimension of the array rw as declared in the (sub)program from which e04vgf is called.

Constraint: $lenrw \geq 600$ , see routine e04vhf.
7: $ifail$ – Integer Input/Output: On entry: ifail must be set to $0$ , $−1$ or $1$ to set behaviour on detection of an error; these values have no effect when no error is detected.
A value of $0$ causes the printing of an error message and program execution will be halted; otherwise program execution continues. A value of $−1$ means that an error message is printed while a value of $1$ means that it is not.

If halting is not appropriate, the value $−1$ or $1$ is recommended. If message printing is undesirable, then the value $1$ is recommended. Otherwise, the value $0$ is recommended. When the value $- 1$ or $1$ is used it is essential to test the value of ifail on exit.

On exit: $ifail = 0$ unless the routine detects an error or a warning has been flagged (see Section 6).

6 Error Indicators and Warnings

If on entry

ifail = 0

−1

, explanatory error messages are output on the current error message unit (as defined by x04aaf).

Errors or warnings detected by the routine:

$ifail = 1$: On entry, $lencw = ⟨ value ⟩$ .
Constraint: $lencw \geq 600$ .

On entry, $leniw = ⟨ value ⟩$ .
Constraint: $leniw \geq 600$ .

On entry, $lenrw = ⟨ value ⟩$ .
Constraint: $lenrw \geq 600$ .

$ifail = - 99$: An unexpected error has been triggered by this routine. Please contact NAG.
See Section 7 in the Introduction to the NAG Library FL Interface for further information.

$ifail = - 399$: Your licence key may have expired or may not have been installed correctly.
See Section 8 in the Introduction to the NAG Library FL Interface for further information.