CompuServe Messages

The -m8 option causes the compiler to add in-line FPU instructions into your code instead of calling library routines to do the math operations. This type of code will only work if you have an FPU, but it is the fastest way of using said FPU. The IEEE math libraries and the FFP math libraries are quite different. Normally, if you plan on using an FPU, you have no need to use the FFP libraries. They are slower and less accurate than the FPU. The FFP "Fast Floating Point" libraries were developed by Motorola some time ago for medium accuracy and good speed using a special format to represent numbers. The IEEE libraries are slower but more accurate. The 68881/2 also use IEEE format numbers.