how to stop matlab from rounding my values and keep them at same precision during calculations? here are my IIR coefficients:

CoefIIR=[1.630078934734 1.267893338385 1.112390120011]


and here are the result given to me by matlab commands:

CoefIIR =

1.6301    1.2679    1.1124


How can I keep the precision for data storage and during calculations?
The precision is kept. It is just the display values that are truncated. 

Type format long to change the displayed precision.