FPSR_EX
#define FPSR_EXOP (FPSR_EX_MSK&(~FPSR_EX))
(~(FPSCR_VX|FPSR_EX) & (1<<(31-rt)));
((FPSCR_VX|FPSR_EX) & ~(1<<(31-rt)));
mask = fsr & FPSR_EX;