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Conversion functions

Float FLOAT(real)

Convert to single precision.

Double DOUBLE(real)

Convert to double precision.

Complex COMPLEX(numeric)

Convert to single precision complex. If the argument is real, the imaginary part is set to 0.

DComplex DCOMPLEX(numeric)

Convert to double precision complex. If the argument is real, the imaginary part is set to 0.

Bool BOOLEAN(region)

Convert to boolean. This can be useful to convert a region to a boolean lattice. Only a region in pixel coordinates can be converted, so in practice only an image mask can be converted.

Note that, where necessary, up-conversions are done automatically. Usually it may only be needed to do a down-conversion (e.g. Double to Float).