How to convert int32* to float32*?

Questions
1

I try to create a buffer :
filter = new_alloc(ib, ‘int32’, (1, 3, 416, 416), ‘Filter’, scope = ‘level_0’)
dst = filter.access_ptr(‘w’, ptr_type=“handle”)

How to gen code like this:
DMA_COPY((half *)Filter, src)

ptr_type or astype does no help

@tqchen @merrymercy

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