Re: Set value to a custom significance. (no display)

[John W. Eaton]

On  1-Mar-2010, Judd Storrs wrote:

| First of all, the machine native floating point is base 2, not base 10
| so this is going to be an approximation. However, something like this
| may work by removing the remainder at each step:
| 
| octave:1> format long
| octave:2> a = 0.499/2
| a =  0.249500000000000
| octave:3> a = round(100*a)/100
| a =  0.250000000000000
| octave:3> b = a * 2
| b =  0.500000000000000
| octave:4> b = round(100*b)/100
| b =  0.500000000000000
| 
| You could use round, ceil or floor depending on how you want rounding to work.

I recently added a chop function:

  http://hg.savannah.gnu.org/hgweb/octave/rev/27777bd27e71

But I have to ask:  Why do you think you want to do this?  What are
you trying to accomplish?

jwe