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When Maarten first saw the utility function below, he couldn’t imagine why converting a number from float to double required a string intermediate. Fortunately, whoever wrote this code followed best practices: their comment not only explained what the code is doing, it also explained why.
/**
* This method converts a float to a double.
* Because the model uses doubles in calculations while the matrices holds floats.
* @param number
* The float value to convert to a double
* @param accurate
* Flag to specify whether to use an accurate conversion from float to double
* or to use a less accurate conversion. Accurate means strings will be used
* what may result in a bit slower performance. Not accurate means typecasting
* will be used, this result in a fault since a double has a higher precision
* then a float.
*/
double floatToDouble(float number, boolean accurate) {
if (accurate) {
return Double.parseDouble(Float.toString(number));
}
return number;
}While Maarten appreciates the author’s effort, he’s not entirely convinced that comments alone can a sensible method make…
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