NAG Library Function Document
nag_licence_query (a00acc) provides a convenient means of checking the availability of a valid licence key on licence-managed implementations before starting computations that will use NAG C Library functions. In particular, the use of this function is highly recommended in programs that call NAG C Library functions within multithreaded sections (e.g., OpenMP parallel regions). The function need only be called once, before the start of the first multithreaded section.
nag_licence_query (a00acc) returns the logical value Nag_TRUE if a valid licence is found, otherwise Nag_FALSE is returned.
On non licence-managed implementations, Nag_TRUE is always returned.
Error Indicators and Warnings
Parallelism and Performance
This example prints an appropriate message depending upon the value returned by nag_licence_query (a00acc).
Program Text (a00acce.c)
Program Results (a00acce.r)