public CLS_Content.Value ComputeValue(CLS_Content content)
{
content.InStack(this);
CLS_Content.Value oriVal = listParam[0].ComputeValue(content);
CLS_Content.Value retVal = new CLS_Content.Value();
ICLS_Type type = content.environment.GetType(oriVal.type);
retVal.value = type.Math2Value(content, '~', oriVal.value, CLS_Content.Value.One, out retVal.type);
content.OutStack(this);
return retVal;
}