7-60
FLOATING-POINT UNIT
FNINIT, FNSTENV, FNSAVE, or FNCLEX instruction is executed, all pending exceptions are
essentially lost (either the FPU status register is cleared or all exceptions are masked). The
FNSTSW and FNSTCW instructions do not check for pending interrupts, but they do not
modify the FPU status and control registers. A subsequent “waiting” floating-point instruction
can then handle any pending exceptions.
