problem with a simple division

I have variable named, n. where

n =0.0500 ;

whos n shows:

1x1(size) 8(bytes) double(class)

now when i am doing,

z=n/0.001;

it gives me z=49.9997 !!!!!!!! but it should be 50.

When I do it in command line it gives me exact 50 .

What am i doing wrong?

N.B : n is coming from a subtraction of two values from a 'csv' file i am reading by csvread

Answer 1

[Roger Stafford]

To get that far away from 50, your n cannot be equal to 0.0500. It is actually something like 0.0499997 which in "format short" would be displayed as 0.0500 . Try using "format long" and see if this isn't true.