e05 Chapter Contents
e05 Chapter Introduction
NAG C Library Manual

# NAG Library Function Documentnag_glopt_bnd_mcs_optset_char (e05jec)

## 1  Purpose

nag_glopt_bnd_mcs_optset_char (e05jec) may be used to supply individual ‘ON’/‘OFF’-valued character optional arguments 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 #include
 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 arguments 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 argument 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 arguments, their symbolic names and default values is given in Section 11 in nag_glopt_bnd_mcs_solve (e05jbc).

None.

## 5  Arguments

1:     optstrconst char *Input
On entry: a string defining a single ‘ON’/‘OFF’-valued character optional argument (as described in Section 11 in nag_glopt_bnd_mcs_solve (e05jbc)).
2:     cvalueconst char *Input
On entry: the ‘ON’/‘OFF’ value associated with the keyword in optstr.
3:     stateNag_E05State *Communication Structure
state contains information required by other functions in this suite. You must not modify it directly in any way.
4:     failNagError *Input/Output
The NAG error argument (see Section 3.6 in the Essential Introduction).

## 6  Error Indicators and Warnings

NE_ALLOC_FAIL
Dynamic memory allocation failed.
On entry, argument $⟨\mathit{\text{value}}⟩$ 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.
NE_NOT_INIT
Initialization function nag_glopt_bnd_mcs_init (e05jac) has not been called.
The supplied optional argument is invalid. A keyword or keyword combination was not recognized.

Not applicable.