is_NaN() [1/12]

static void xtd::tunit::valid::is_NaN ( double  value )

static

that a value is NaN.

Parameters

value

The value to check is NaN.

Examples

double v1 = std::numeric_limits<double>::quiet_NaN();
double v2 = 3.14159265358979323846;
xtd::tunit::valid::is_NaN(v1); // test ok.
xtd::tunit::valid::is_NaN(v2); // test fails.