perform and sample

So far, the sample block has been used to specify the output of the implemented algorithms. There is one more block, the perform block, that can be used around the sample block. The perform block does not operate at the sample level, but at the block level (determined by the vector size of your system). This allows for optimizations in variable declarations and input unpacking (given that, however, the in1, in2 etc... constructs, when used in perform, will not retrieve values at the sample level, but at the block level). The out1, out2, etc.. constructs are not available in the perform block.

Here the in1 and in2 are unpacked in the sample block. This means that their values are polled once per sample. in3, which is unpacked in the perform section, on the other hand, is polled once per block.

ins  3:
    "mix" {0.5, 0, 1}

outs 1

    mix = in3

        out1 = (in1 * (1.0 - mix)) + (in2 * mix)


The perform block is optional. sample can be defined on its own. However, if perform is defined, the sample block must be contained in it.

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