Hi, Devin,
You may misunderstand NaN. NaN is a special floating number. It doesn't
equal to anything, even itself. If x is NaN, x == x will return false.
Actually this is a trick to detect whether it is NaN or not.
However, there is a standard way to handle it, using isnan [1]. Try the
code below
On 12 December 2014 at 10:09, Devin wrote:
| ... but you can't set a mathematical operation equal to a string. I also
tried:
|
| int test()
| {
| gsl_set_error_handler_off();
| if(gsl_sf_hyperg_2F1(1,1,1.1467003,1) == NAN){
| std::cout << "Error" << std::endl;
| }
| retur
Thanks Qiang for your help
When I try your code, this is the output I get in Rstudio:
status = 1.#QNAN0
status = 0.310474
[1] 0
What I try to achieve is to feed this function with different input parameters
and everytime the function results in "1.#QNAN0", it should return "NAN".
I tried somet
