This was an option setting routine for e04vhf which has been superseded by e04srf. e04srf is part of the NAG optimization modelling suite (see Section 3.1 in the E04 Chapter Introduction) which uses the option setting facilities common to that suite.
The routine may be called by the names e04vmf or nagf_opt_nlp2_sparse_option_integer_set.
e04vmf may be used to supply values for integer optional parameters to e04vhf. It is only necessary to call e04vmf for those arguments whose values are to be different from their default values. One call to e04vmf sets one argument value.
Each integer optional parameter is defined by a single character string in string and the corresponding value in ivalue.
For example, the following allows the iteration limit to be defined:
Optional parameter settings are preserved following a call to e04vhf and so the keyword Defaults is provided to allow you to reset all the optional parameters to their default values before a subsequent call to e04vhf.
A complete list of optional parameters, their abbreviations, synonyms and default values is given in Section 12 in e04vhf.
1: – Character(*)Input
On entry: a single valid keyword of an integer optional parameter (as described in Section 12 in e04vhf).
2: – IntegerInput
On entry: an integer value associated with the keyword in string.
3: – Character(8) arrayCommunication Array
Note: the actual argument supplied must be the array cw supplied to the initialization routine e04vgf.
4: – Integer arrayCommunication Array
Note: the actual argument supplied must be the array iw supplied to the initialization routine e04vgf.
5: – Real (Kind=nag_wp) arrayCommunication Array
Note: the actual argument supplied must be the array rw supplied to the initialization routine e04vgf.
6: – IntegerInput/Output
On entry: ifail must be set to , or to set behaviour on detection of an error; these values have no effect when no error is detected.
A value of causes the printing of an error message and program execution will be halted; otherwise program execution continues. A value of means that an error message is printed while a value of means that it is not.
If halting is not appropriate, the value or is recommended. If message printing is undesirable, then the value is recommended. Otherwise, the value is recommended. When the value or is used it is essential to test the value of ifail on exit.
On exit: unless the routine detects an error or a warning has been flagged (see Section 6).
6Error Indicators and Warnings
If on entry or , explanatory error messages are output on the current error message unit (as defined by x04aaf).
Errors or warnings detected by the routine:
The initialization routine e04vgf has not been called.
The supplied option is invalid. Check that the keywords are neither ambiguous nor misspelt. The option string is ‘’ and .
An unexpected error has been triggered by this routine. Please
See Section 7 in the Introduction to the NAG Library FL Interface for further information.
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.
Dynamic memory allocation failed.
See Section 9 in the Introduction to the NAG Library FL Interface for further information.
8Parallelism and Performance
Background information to multithreading can be found in the Multithreading documentation.