Does Altera have any function like SRL16E of xilinx

I agree with you!

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To be honest, I think the SRL16 looks better and would provide better area. Yet I've converted many design with them(especially DSP designs) and have yet to see one where they had an area advantage. I admittedly have always been surprised by this, but have seen it time and time again. I'm sure such designs exist but don't know about them and doubt if they're common. (What I am sure is common, are there are a lot of X designers that use lots of SRL16s and assume they will have bad area in an Altera part, even if they don't verify this...)

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