The FPU has an instruction for fast inverse square root. https://github.com/antonblanchard/microwatt/blob/master/fpu.vhdl#L1676 https://github.com/antonblancha

The FPU has an instruction for fast inverse square root. https://github.com/antonblanchard/microwatt/blob/master/fpu.vhdl#L1676 https://github.com/antonblanchard/microwatt/blob/master/fpu.... I presume v.state := ... is what the FPU will do next, like a deferred goto. you can unroll the whole process following that. lookup table: https://github.com/antonblanchard/microwatt/blob/master/fpu.vhdl#L334 https://github.com/antonblanchard/microwatt/blob/master/fpu....