int
sgl_to_sgl_fcnvfx(
		    sgl_floating_point *srcptr,
		    sgl_floating_point *nullptr,
		    int *dstptr,
		    sgl_floating_point *status)
int
sgl_to_sgl_fcnvfx(
		    sgl_floating_point *srcptr,
		    sgl_floating_point *_nullptr,
		    int *dstptr,
		    sgl_floating_point *status)