int
sgl_to_dbl_fcnvfu(
		    sgl_floating_point *srcptr,
		    unsigned int *nullptr,
		    dbl_unsigned *dstptr,
		    unsigned int *status)
int
sgl_to_dbl_fcnvfu(
		    sgl_floating_point *srcptr,
		    unsigned int *_nullptr,
		    dbl_unsigned *dstptr,
		    unsigned int *status)