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Document bit manipulation in BandMathX
MuparserX allows bit manipulation (doc), but OTB is getting the image as a float type at present. This prevent the use of such bit operator that throws the error:
Message: Can't evaluate function/operator "<<":
Argument 1 of function/operator "im1b1" is of type 'f' whereas type 'i' was expected.
Formula: im1b1 << 1EDIT:
We need to add documentation as it can be done if one is using the int instruction (see Cédric comments)