This chapter describes how to control the way your Microsoft C/C++ programs perform floating-point math operations. It describes the math packages that you can include in the C run-time libraries when you run the SETUP program, then discusses the options you can specify in the Programmer's WorkBench (PWB) or on the CL command line to choose the appropriate library for linking and controlling floating-point instructions.
This chapter also explains how to override floating-point options by changing libraries at link time, and how to control use of the Intel math coprocessor (80x87) using the NO87 environment variable.