Canonical Signed Digits

Generates a CSD representation of a floating point number.

Description

Canonical-signed-digit (CSD) coefficient representations of floating point numbers lead to efficient add/subtract networks for hardwired DSP multiplies of two?s complement signals.

 example csdigit(23) returns +0-00-.
         Where +0-00-. is a representation of +1 in 2^5, -1 in 2^3 and -1 in 2^0 positions.
         i.e. 23 = 32 - 8 - 1

 example [a,p,n]=csdigit(23.5,6,2) returns
            a = +0-000.-0
            p=32
            n=8.5
            23.5 = 32 - 8 - 0.5

• MATLAB release: MATLAB 7.0.4 (R14SP2)

[paramasivam chinnusamy]

 

[anantha gunnala]

very useful

[Rolo oloR]

This is simple and easy to use.

[Joe]

When the precision is not enough, I suggest to use "round" instead of "floor" to get better approximation.