On entry: the first dimension of the array c as declared in the (sub)program from which f06yaf is called.
6Error Indicators and Warnings
8Parallelism and Performance
f06yaf 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.