- The Data Class:
- Casting and uncasting arrays:
- This is one of the two places where NeXtMidas uses native C code (if available).
- For large arrays, doing the type conversion/cast in native code is faster.
- For small arrays, the difference between Java and C code is negligable.
- A complete Java implementation is available that is automatically used when
NeXtMidas runs as an applet or via WebStart.
- If you use the methods in the Data class, NeXtMidas will automatically
choose between the C or Java code, using the fastest option available.
- If you follow the following rules, your code will work all the time:
- If you cast an array, you must uncast it.
- Always cast and uncast within the process() method.
- The copy parameter to the cast and uncast methods indicates if a
data copy is required.
- Input array: Use true for the cast
and false for the uncast.
- Output array: Use false for the cast
and true for the uncast.
- In/out array: Use true for the cast
and true for the uncast.
Setting the copy flag to false allows NeXtMidas
to skip the data copy if doing so would be faster.
- The docs for the nxm.sys.lib.Data
class include multiple examples.