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NAG Library Function Document

nag_glopt_bnd_mcs_optset_char (e05jec)

▸▿ Contents

1 Purpose

2 Specification

3 Description

4 References

5 Arguments

6 Error Indicators and Warnings

7 Accuracy

8 Parallelism and Performance

9 Further Comments

10 Example

1 Purpose

nag_glopt_bnd_mcs_optset_char (e05jec) may be used to supply individual ‘ON’/‘OFF’-valued character optional parameters to nag_glopt_bnd_mcs_solve (e05jbc). The initialization function nag_glopt_bnd_mcs_init (e05jac) must have been called before calling nag_glopt_bnd_mcs_optset_char (e05jec).

2 Specification

#include <nag.h>

#include <nage05.h>

void	nag_glopt_bnd_mcs_optset_char (const char optstr, const char cvalue, Nag_E05State state, NagError fail)

3 Description

nag_glopt_bnd_mcs_optset_char (e05jec) may be used to supply values for ‘ON’/‘OFF’-valued character optional parameters to nag_glopt_bnd_mcs_solve (e05jbc). It is only necessary to call nag_glopt_bnd_mcs_optset_char (e05jec) for those arguments whose values are to be different from their default values. One call to nag_glopt_bnd_mcs_optset_char (e05jec) sets one argument value.

Each ‘ON’/‘OFF’-valued character optional parameter is defined by a single character string in optstr and the corresponding value in cvalue. For example, the following allows local searches to be turned off:

strcpy(&lcsrch[0],"Off");
e05jec ('Local Searches', lcsrch, &state, &fail);

A complete list of optional parameters, their symbolic names and default values is given in Section 12 in nag_glopt_bnd_mcs_solve (e05jbc).

4 References

None.

5 Arguments

1: $optstr$ – const char *Input: On entry: a string defining a single ‘ON’/‘OFF’-valued character optional parameter (as described in Section 12 in nag_glopt_bnd_mcs_solve (e05jbc)).
2: $cvalue$ – const char *Input: On entry: the ‘ON’/‘OFF’ value associated with the keyword in optstr.
3: $state$ – Nag_E05State *Communication Structure: state contains information required by other functions in this suite. You must not modify it directly in any way.
4: $fail$ – NagError *Input/Output: The NAG error argument (see Section 2.7 in How to Use the NAG Library and its Documentation).

6 Error Indicators and Warnings

NE_ALLOC_FAIL: Dynamic memory allocation failed.
See Section 2.3.1.2 in How to Use the NAG Library and its Documentation for further information.
NE_BAD_PARAM: On entry, argument $〈value〉$ had an illegal value.
NE_INTERNAL_ERROR: An internal error has occurred in this function. Check the function call and any array sizes. If the call is correct then please contact NAG for assistance.

An unexpected error has been triggered by this function. Please contact NAG.
See Section 2.7.6 in How to Use the NAG Library and its Documentation for further information.
NE_NO_LICENCE: Your licence key may have expired or may not have been installed correctly.
See Section 2.7.5 in How to Use the NAG Library and its Documentation for further information.
NE_NOT_INIT: Initialization function nag_glopt_bnd_mcs_init (e05jac) has not been called.
NE_OPT_NOT_READ: The supplied optional parameter is invalid. A keyword or keyword combination was not recognized.
NE_OUT_OF_RANGE: Attempt to assign an illegal value of $Local Searches$ ( $lcsrch$ ): $lcsrch = 〈value〉$ .

Attempt to assign an illegal value of $Repeatability$ ( $repeat$ ): $repeat = 〈value〉$ .

7 Accuracy

Not applicable.

8 Parallelism and Performance

nag_glopt_bnd_mcs_optset_char (e05jec) is threaded by NAG for parallel execution in multithreaded implementations of the NAG Library.

Please consult the x06 Chapter Introduction for information on how to control and interrogate the OpenMP environment used within this function. Please also consult the Users' Note for your implementation for any additional implementation-specific information.