The function may be called by the names: e04nyc, nag_opt_qpconvex2_sparse_option_double_get or nag_opt_sparse_convex_qp_option_get_double.

3 Description

e04nyc obtains the current value of a double option. For example

e04nyc ("Feasibility Tolerance", &featol, &state, &fail);

will result in the value of the optional parameter

Feasibility Tolerance

being output in featol.

A complete list of optional parameters, their abbreviations, synonyms and default values is given in Section 12 in e04nqc.

4 References

None.

5 Arguments

1: $string$ – const char * Input: On entry: a single valid keyword of a double optional parameter (as described in Section 12 in e04nqc).
2: $rvalue$ – double * Output: On exit: the double value associated with the keyword in string.
3: $state$ – Nag_E04State * Communication Structure: state contains internal information required for functions in this suite. It must not be modified in any way.
4: $fail$ – NagError * Input/Output: The NAG error argument (see Section 7 in the Introduction to the NAG Library CL Interface).

6 Error Indicators and Warnings

NE_ALLOC_FAIL: Dynamic memory allocation failed.
See Section 3.1.2 in the Introduction to the NAG Library CL Interface for further information.
NE_BAD_PARAM: On entry, argument $⟨ value ⟩$ had an illegal value.
NE_E04_OPTION_INVALID: The supplied option is invalid. Check that the keywords are neither ambiguous nor misspelt. The option string is ‘ $⟨ value ⟩$ ’.
NE_E04NPC_NOT_INIT: The initialization function e04npc has not been called.
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 7.5 in the Introduction to the NAG Library CL Interface for further information.
NE_NO_LICENCE: 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.