Importing data from excel and losing precision

I am importing data from excel, and it is only importing to the 3rd decimal place. I have tried formatting long to no avail, example: from excel 7.369487E-10 becomes 1.0e-09 * 0.737. Is it because of the E-10 that it will only import to this precision? When it is formatted long it shows 1.0e-09* .73700000000. It is an array that I am importing and I am comparing averages of the array in matlab and excel and they are not matching up for this reason, thanks

Answer 1

[Ryan Helling]

the problem was I was using xlsread on a csv file, once i changed the file back to a xlsx file i was able to retain all of the decimal places.