λ x x0 : word64 * word64 * word64 * word64 * word64 * word64 * word64 * word64,
Interp-η
(λ var : Syntax.base_type → Type,
 λ '(x16, x17, x15, x13, x11, x9, x7, x5, (x30, x31, x29, x27, x25, x23, x21, x19))%core,
 (((0x7fffffffffffffe + x16) - x30), ((0xffffffffffffffe + x17) - x31), ((0x7fffffffffffffe + x15) - x29), ((0xffffffffffffffe + x13) - x27), ((0x7fffffffffffffe + x11) - x25), ((0xffffffffffffffe + x9) - x23), ((0x7fffffffffffffe + x7) - x21), ((0xfffffffffffffde + x5) - x19)))
(x, x0)%core
     : word64 * word64 * word64 * word64 * word64 * word64 * word64 * word64 → word64 * word64 * word64 * word64 * word64 * word64 * word64 * word64 → ReturnType (uint64_t * uint64_t * uint64_t * uint64_t * uint64_t * uint64_t * uint64_t * uint64_t)