The NAG error argument (see Section 7 in the Introduction to the NAG Library CL Interface).
6Error 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 had an illegal value.
On entry, .
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.
Let and be the relative errors in the argument and result respectively.
If is considerably greater than the machine precision (i.e., if is due to data errors etc.), then and are approximately related by:
The following graph shows the behaviour of the error amplification factor
However, if is of the same order as machine precision, then rounding errors could make somewhat larger than the above relation indicates. In fact will be largely independent of or , but will be of the order of a few times the machine precision.
8Parallelism and Performance
s15atc is not threaded in any implementation.
This example reads values of the argument from a file, evaluates the function at each value of and prints the results.