Floating-point instructions

Use floating-point instructions when you want to do arithmetic operations on data in any of the floating point formats. Thus, you do not have to keep track of the decimal point in your computations. Floating-point instructions also let you do arithmetic operations on both large numbers and small numbers, normally providing greater precision than fixed-point decimal instructions.

For further information, see Floating-Point Instructions in the z/Architecture® Principles of Operation information.