NAG CL Interface
e04nsc (qpconvex2_​sparse_​option_​string)

Settings help

CL Name Style:

1 Purpose

e04nsc may be used to supply individual optional parameters to e04nqc. The initialization function e04npc must have been called before calling e04nsc.

2 Specification

#include <nag.h>
void  e04nsc (const char *string, Nag_E04State *state, NagError *fail)
The function may be called by the names: e04nsc, nag_opt_qpconvex2_sparse_option_string or nag_opt_sparse_convex_qp_option_set_string.

3 Description

e04nsc may be used to supply values for optional parameters to e04nqc. It is only necessary to call e04nsc for those arguments whose values are to be different from their default values. One call to e04nsc sets one argument value.
Each optional parameter is defined by a single character string, consisting of one or more items. The items associated with a given option must be separated by spaces, or equals signs [=]. Alphabetic characters may be upper or lower case. The string
Print Level = 1
is an example of a string used to set an optional parameter. For each option the string contains one or more of the following items:
For e04nsc, each user-specified option is not normally printed as it is defined, but this printing may be turned on using the keyword List. Thus the statement
e04nsc ("List", &state, &fail);
turns on printing of this and subsequent options. Printing may be turned off again using the keyword Nolist.
Optional parameter settings are preserved following a call to e04nqc 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 e04nqc.
A complete list of optional parameters, their abbreviations, synonyms and default values is given in Section 12 in e04nqc.

4 References


5 Arguments

1: string const char * Input
On entry: a single valid option string (see Section 3 in e04nsc and Section 12 in e04nqc).
2: state Nag_E04State * Communication Structure
state contains internal information required for functions in this suite. It must not be modified in any way.
3: fail NagError * Input/Output
The NAG error argument (see Section 7 in the Introduction to the NAG Library CL Interface).

6 Error Indicators and Warnings

Dynamic memory allocation failed.
See Section 3.1.2 in the Introduction to the NAG Library CL Interface for further information.
On entry, argument value had an illegal value.
The supplied option is invalid. Check that the keywords are neither ambiguous nor misspelt. The option string is ‘value’.
The initialization function e04npc has not been called.
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 7.5 in the Introduction to the NAG Library CL 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 CL Interface for further information.

7 Accuracy

Not applicable.

8 Parallelism and Performance

Background information to multithreading can be found in the Multithreading documentation.
e04nsc is not threaded in any implementation.

9 Further Comments

e04nrc, e04ntc or e04nuc may also be used to supply optional parameters to e04nqc.

10 Example

See e04nrc.