public void ByteAccess()
{
var i = new KzUInt256();
var s = i.Span;
s[0] = 0x21;
s[31] = 0xfe;
var str = i.ToString();
Assert.Equal("fe00000000000000000000000000000000000000000000000000000000000021", str);
}
public void HexByteOrder()
{
var hex = "fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210";
var fbf = new byte[] { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 };
var fbl = fbf.Reverse().ToArray();
var ifbl = new KzUInt256(hex, firstByteFirst: false);
var ifbf = new KzUInt256(hex, firstByteFirst: true);
Assert.Equal(ifbl.ReadOnlySpan.ToArray(), fbl);
Assert.Equal(ifbf.ReadOnlySpan.ToArray(), fbf);
Assert.Equal(hex, ifbl.ToString());
Assert.Equal(hex, ifbf.ToStringFirstByteFirst());
}
