truncate and floating-points

I need to write a function called truncate that takes a floating-point value as its input and truncates (discards) the value after a specified decimal point before returning the modified floating-point value. It should be possible to call your function from the command window using the following: >> res = truncate(5.672, 2); % results in res = 5.67 >> res = truncate(5.677, 2); % results in res = 5.67 >> res = truncate(-5.672, 2); % results in res = -5.67 >> res = truncate(-5.677, 2); % results in res = -5.67

thanks!

Answer 1

[Roger Stafford]

Yes, it can be "fixed" to accomplish that.

Answer 2

[Walter Roberson]

You cannot do that.

http://www.mathworks.co.uk/matlabcentral/answers/119473-write-a-function-to-round-off-numbers