Hey guys

A question not quite related to GNU Radio. Does there exist any fast

algorithm for computing the square root of a float number? In my

algorithm,

I need to compute the square root of a float number which ranges between

0

and 1.

Thanks

Dawei

Dawei Shen wrote:

A question not quite related to GNU Radio. Does there exist any fast

algorithm for computing the square root of a float number? In my

algorithm, I need to compute the square root of a float number which

ranges between 0 and 1.

Square root fun:

http://www.azillionmonkeys.com/qed/sqroot.html

Johnathan C.

[email protected]

On Thu, October 19, 2006 1:21 am, Dawei Shen said:

Hey guys

A question not quite related to GNU Radio. Does there exist any fast

algorithm for computing the square root of a float number? In my

algorithm,

I need to compute the square root of a float number which ranges between 0

and 1.

The DSP Tips and Tricks column of IEEE Signal Proc Magazine had it in

one

of the issues. I do not remember the exact issue. Check for 2004/2005

issues. Also if I remember, Rick Lyons’ book also had a discussion on

this.

–

Ramakrishnan, VU3RDD

On Wed, Oct 18, 2006 at 03:51:23PM -0400, Dawei Shen wrote:

Hey guys

A question not quite related to GNU Radio. Does there exist any fast

algorithm for computing the square root of a float number? In my algorithm,

I need to compute the square root of a float number which ranges between 0

and 1.

Thanks

Dawei

Table lookup with interpolation works well, particularly with this

bounded range.

Eric