Host array with double?

[xiongtx]

I'm wondering why the following throws an exception:

Code: Select all

array test = randu(5);
double *test = test.host<double>();


which gives the error message: An unhandled exception of type 'System.Runtime.InteropServices.SEHException' occurred in test_arrayfire_vcpp.exe

However, using float instead of double works fine.

[pavanky]

By default randu creats floats. Use randu(5,f64) to generate double precision numbers.

[Medivh]

Hi

if i generate an array by randu(4);, it gives same output each time. The output is uniformly distributed but not really random. It should give different values for each execution.

any suggestion?

Arrayfire v2.1 win64

[shehzan]

Hi

The different values are not generated because the starting seed value remains the same.
If you would like to use a different seed, use the af_rand_setseed(unsigned long long seed) function.