public EncodedData?Encode(object displayable)
{
bool IsNearZero(double value) =>
System.Math.Abs(value) <= configurationSource.TruncationThreshold;
if (displayable is DisplayableUnitaryOperator op)
{
if (op?.Data is null)
{
logger.LogError("Asked to encode a displayable unitary operator, but its data was null. This should not happen.");
return(null);
}
var precision = configurationSource.GetOptionOrDefault(
"dump.unitaryPrecision",
3
);
var outputMatrix = String.Join(
" \\\\\n",
op.Data.EnumerateOverAxis().Cast <NumSharp.NDArray>().Select(
row =>
String.Join(" & ",
row.EnumerateOverAxis()
.Cast <NumSharp.NDArray>()
.Select(element =>
{
var format = $"{{0:G{precision}}}";
var re = (double)element[0];
var im = (double)element[1];
var reFmt = String.Format(format, re);
var imFmt = String.Format(format, System.Math.Abs(im)) + "i";
if (IsNearZero(re) && IsNearZero(im))
{
return("0");
}
else if (IsNearZero(im))
{
return(reFmt);
}
else if (IsNearZero(re))
{
return(im < 0.0 ? $"-{imFmt}" : imFmt);
}
else
{
return($"{reFmt} {(im < 0.0 ? "-" : "+")} {imFmt}");
}
})
)
)
);
return($@"
<table>
<tr>
<th>Qubit IDs</th>
<td>{String.Join(", ", op.Qubits.Select(q => q.Id))}
</tr>
<tr>
<th>Unitary representation</th>
<td>$$
\left(\begin{{matrix}}
{outputMatrix}
\end{{matrix}}\right)
$$</td>
</tr>
</table>
".ToEncodedData());
}
else
{
return(null);
}
}