# NAG C Library Function Document

## 1Purpose

nag_glopt_bnd_mcs_init (e05jac) is used to initialize communication data for the suite of multi-level coordinate search functions: nag_glopt_bnd_mcs_solve (e05jbc), nag_glopt_bnd_mcs_optset_file (e05jcc), nag_glopt_bnd_mcs_optset_string (e05jdc), nag_glopt_bnd_mcs_optset_char (e05jec), nag_glopt_bnd_mcs_optset_int (e05jfc), nag_glopt_bnd_mcs_optset_real (e05jgc), nag_glopt_bnd_mcs_option_check (e05jhc), nag_glopt_bnd_mcs_optget_int (e05jkc) and nag_glopt_bnd_mcs_optget_real (e05jlc).

## 2Specification

 #include #include
 void nag_glopt_bnd_mcs_init (Integer n_r, Nag_E05State *state, NagError *fail)

## 3Description

nag_glopt_bnd_mcs_init (e05jac) initializes the structure state for the solver nag_glopt_bnd_mcs_solve (e05jbc) and the optional-argument handlers nag_glopt_bnd_mcs_optset_file (e05jcc), nag_glopt_bnd_mcs_optset_string (e05jdc), nag_glopt_bnd_mcs_optset_char (e05jec), nag_glopt_bnd_mcs_optset_int (e05jfc), nag_glopt_bnd_mcs_optset_real (e05jgc), nag_glopt_bnd_mcs_option_check (e05jhc), nag_glopt_bnd_mcs_optget_int (e05jkc) and nag_glopt_bnd_mcs_optget_real (e05jlc).

None.

## 5Arguments

1:    $\mathbf{n_r}$Integer
This argument is no longer accessed by nag_glopt_bnd_mcs_init (e05jac).
2:    $\mathbf{state}$Nag_E05State *Communication Structure
state contains information required by other functions in this suite. You must not modify it directly in any way.
3:    $\mathbf{fail}$NagError *Input/Output
The NAG error argument (see Section 3.7 in How to Use the NAG Library and its Documentation).

## 6Error 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.
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.
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.

Not applicable.

## 8Parallelism and Performance

nag_glopt_bnd_mcs_init (e05jac) 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.