Inv_sqrt

[wolftrax84]

dspfunc.c

[thrawn117]

I completed the inv_sqrt function and tested at 50MHz with 3 test vectors and about 1500 values

[teh117]

Estimated clk cycles: 34

[jpj79]

Post-Route and Testing Time Samples: START: 420 ns DONE: 460 ns TOTAL: 1< Clock cycles

START: 160,040 ns DONE: 160,980 ns TOTAL: 47 Clock Cycles

START: 354,700 ns DONE: 355,240 ns TOTAL: 27 Clock Cycles

Behavioral Timing Samples: START: 503,400 ns DONE: 503,900 ns TOTAL: 25 Clock cycles

START: 299,200 ns DONE: 299,740 ns TOTAL: 27 Clock Cycles

START: 118,700 ns DONE: 119,720 ns TOTAL: 51 Clock Cycles