Handling multiply-add operations

By default, the compiler violates certain IEEE 754 floating-point rules in order to improve performance. For example, multiply-add instructions are generated by default because they are faster and produce a more precise result than separate multiply and add instructions. If you want greater compatibility with the accuracy available on other systems, you can use the -qfloat=nomaf option to suppress the generation of these multiply-add instructions. IBM Copyright 2003