convert large number to smaller

I have a large array with numbers like these:

3.2692e+17

However, I want to extraxt the first three numbers, as I am interested in the 32.6 (or 32.7 if rounded). Some numbers are 3.2692e+16 for example, so dividing by e+16 is not working. What is the easiest way to do this?

[KALYAN ACHARJYA]

Input=3.2692e+17

Disired Result=32.6

You want convert or extract?

Answer 1

[Star Strider]

One approach:

f = @(x) round(x.*10.^floor(1-log10(abs(x))),2);

producing:

x = [3.2692e+17; 3.2692e+16; 4.2516E+8];
Result = f(x)
Result =
                      3.27
                      3.27
                      4.25

Change the last argument to the round function to change the number of decimal places the function returns.

[Lieke Numan]

Thanks a lot!

[Star Strider]

As always, my pleasure!