rounding error - Matlab: finding position of last nonzero digit of a number -

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i have column vector pp filled numbers, instance:

23.234000 3.1237340 4.4359000

i want find number of places right of decimal smallest nonzero digit in vector occupies, in case 6, because of 4 in 3.123734. want multiply every number in vector 10^6, rid of decimals in vector. want eliminate rounding errors. what's best way done?

the actual value may different being displayed matlab. instance, consider following example:

>> x = 1.4 - [0.1; 0.09999999]  x =    1.3000    1.3000

matlab shows both values 1.3, in fact, none of them is:

>> x - 1.3  ans =   -2.2204e-16    1.0000e-08

my suggestion therefore decide on fixed accuracy (say, 6 digits), , multiply corresponding power of 10.


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