isEven

import std.meta : AliasSeq;
import std.conv : to;
import std.traits : isUnsigned;

static foreach(T; AliasSeq!(ubyte, byte, ushort, short, uint, int, ulong, 
			long)) 
{
	assert( isEven(to!T(0)));
	assert(!isEven(to!T(1)));
	assert( isEven(to!T(2)));

	static if(!isUnsigned!T) {
		assert( isEven(to!T(-0)));
		assert(!isEven(to!T(-1)));
		assert( isEven(to!T(-2)));
	}

	static assert( isEven(to!T(0)));
	static assert(!isEven(to!T(1)));
	static assert( isEven(to!T(2)));

	static if(!isUnsigned!T) {
		static assert( isEven(to!T(-0)));
		static assert(!isEven(to!T(-1)));
		static assert( isEven(to!T(-2)));
	}
}