The routine may be called by the names e05jgf or nagf_glopt_bnd_mcs_optset_real.
e05jgf may be used to supply values for real optional parameters to e05jbf. It is only necessary to call e05jgf for those arguments whose values are to be different from their default values. One call to e05jgf sets one argument value.
Each real optional parameter is defined by a single character string in optstr and the corresponding value in rvalue.
For example the following illustrates how the local searches tolerance could be defined:
On entry: the dimension of the array comm as declared in the (sub)program from which e05jgf is called.
5: – 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:
Initialization routine e05jaf has not been called.
On entry, .
The supplied optional parameter is invalid. A keyword or keyword combination was not recognized.
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.
e05jgf 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 routine. Please also consult the Users' Note for your implementation for any additional implementation-specific information.