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esv::na

esv::na is used to check if the comparison of two values have no result. Having result means the comparison result is one of <, <, >, >, ==; No result means not any one of them.

esv::na returns true if no comparison result; returns false if having comparison result.

Their types must satisfy esv::real_meric.

esv::na is used to check if the comparison of two values have no result.

c++ example

#include <esvcpp/core.hpp>

int main()
{
	esv::ux32 a = 7;
	esv::fx32 b = 3.2;
	esv::fx32 c = esv::nan_v<esv::fx32>;

	bool x = esv::lt(a, b);
	bool y = esv::gt(b, c);
	bool z = esv::na(a, c);

	esv::print(x, y, z); // false false true
}

See Also

esv::lt

esv::gt

esv::nan_v

esv::fx32

esv::ux32