inverse sine FPGA

[Ether]

Originally Posted by Betty Boop

I’m having a hard time utilizing the attached VI in mapping the input and output to their true values (i.e. -1 to 1 for input, -pi/2 to pi/2 for output).

I'll answer your lookup table question, even though I too wonder why you are doing this.

For indices from 0 to 1022, populate your table with arcsine(index/511-1).

To use the table to find arcsine(X) (where -1<=X<=+1), calculate the index as 511*(X+1) and look up the arcsine for that index in the table.

[Betty Boop]

Originally Posted by Ether

I'll answer your lookup table question, even though I too wonder why you are doing this.

For indices from 0 to 1022, populate your table with arcsine(index/511-1).

To use the table to find arcsine(X) (where -1<=X<=+1), calculate the index as 511*(X+1) and look up the arcsine for that index in the table.

Hi, Sir! :D Thanks for giving me an idea! :D I've successfully created the LUT for the inverse sine! :D Thank you very much again! :D Btw, the questions I've posted in the forums are for my thesis :D Thanks for all the help! :D