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abbr.浮点运算单元 (Float Point Unit)
1、fpu no───fpu编号
1、Other programs may attempt to detect certain floating-point errors by checking the FPU's status word.───其他程序可能尝试通过检查FPU的状态字来检测某些浮点错误。
2、Floating-point exceptions are enabled by modifying the FPU control word with the _controlfp function.───通过用_controlfp函数修改FPU控制字，可以启用浮点异常。
3、FPU mode is another case where the state of the CPU should be protected from preemption.───FPU模式是另外一种CPU应该被保护起来不被抢占的情形。
4、Therefore, it is necessary to design high performance FPU.───因此，高性能浮点微处理单元的设计是非常有必要。
5、This "wait" instruction forces the processor to synchronize with the state of the FPU and handle any pending exceptions.───该“等待”指令强迫处理器与FPU的状态同步并处理任何挂起的异常。
6、Each stream processor has a fully pipelined integer arithmetic logic unit (ALU) and floating point unit (FPU).───每一个流处理器有一个全面的流水线整数算术逻辑单元 (A L U)和浮点单元 (F P U)。
7、If preemption happens here, then upon reschedule, the FPU state is completely different from what was there before preemption.───如果这时发生了抢占，由于重新调度，FPU状态就会与抢占前完全不同。
8、In addition I recommend Simply FPU because it's an awesome tutorial.───另外我建议只是FPU因为这是一个很棒的教程。
9、So FPU code must always be locked against kernel preemption.───所以FPU代码必须始终被锁定，以防止内核抢占。