C6
C6 = -1.13596475577881948265e-11; /* 0xBDA8FAE9, 0xBE8838D4 */
r = z*(C1+z*(C2+z*C3)) + w*w*(C4+z*(C5+z*C6));
C6 = -1.1470297442401303e-11, /* -0x19393412bd1529.0p-89 */
#define POLY(z) (z*(C1+z*(C2+z*(C3+z*(C4+z*(C5+z*(C6+z*C7)))))))
C6 = -0.1147074559772972315817149986812031204775e-10L,
#define POLY(z) (z*(C1+z*(C2+z*(C3+z*(C4+z*(C5+z*(C6+z*(C7+ \