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If there will be a math coprocessor chip in your embedded system, then you
should compile your application with the "fpi87" option and one of "fp2",
"fp3" or "fp5" depending on which math coprocessor chip will be in your
embedded system.  If there will not be a math coprocessor chip in your
embedded system, then you should compile your application with the "fpc"
option.  You should not use the "fpi" option since that will cause extra
code to be linked into your application to decode and emulate the 80x87
instructions contained in your application.