Floating point division

The EINVF32 operation generates an estimate of 1/X in 32-bit floating-point format accurate to approximately 8 bits. This value can be used in a Newton-Raphson algorithm to get a more accurate answer. That is:

Ye = Estimate(1/X);
Ye = Ye*(2.0 - Ye*X)
Ye = Ye*(2.0 - Ye*X)

Please take a look at the following resources for assembly code examples to  implement this.

• example code for the EINVF32 instruction in the TMS320C28x Floating Point Unit and Instruction Set Reference Guide (SPRUEO2).
• the division function code in the 28x FPU Fast RTS Library (SPRC664) http://focus.ti.com/docs/toolsw/folders/print/sprc664.html

Regards

Lori