ATAN2 CORE in LabVIEW?

[Yoz]

I am just about to use LabVIEW FPGA for the first time and in the intended application I will need to implement a function that approximates to the ATAN2(a,b) function.

I know that I could use an IP CORE and insert into a HDL Node, but since I dont understand VHDL and I like to understand what is going on in my code I would prefer to write the function in LabVIEW.

Does anyone have or know of an ATAN2 function that has been implemented in LabVIEW for FPGA targets.

I am using LV 8.0 with FPGA module 8.0. The hardware taget is PCI 7831R.

Thanks in Advance

Simon Pettman

Dynamic Engineering System Architects

[rpursley8]

The only thing I have found that might be implemented is a summation function

for x^2 < 1

atan(x) = x- (x^3/3) + (x^5/5) - (x^7/7) + ...

for x>1

atan(x) = pi/2 - 1/x + (1/(3x^3)) - (1/(5x^5)) + (1/(7x^7)) - ...

for x<-1

atan(x) = -pi/2 - 1/x + (1/(3x^3)) - (1/(5x^5)) + (1/(7x^7)) - ...