_z_f1             153 include/math-emu/op-1.h     _FP_W_TYPE _xh, _xl, _yh, _yl, _z_f0, _z_f1, _a_f0, _a_f1;		\
_z_f1             165 include/math-emu/op-1.h     _z_f1 = _xh * _yh;							\
_z_f1             169 include/math-emu/op-1.h       _z_f1 += (_FP_W_TYPE)1 << (_FP_W_TYPE_SIZE/2);			\