λ x : word64 * word64 * word64 * word64 * word64,
Interp-η
(λ var : Syntax.base_type → Type,
 λ '(x7, x8, x6, x4, x2)%core,
 uint64_t x9 = (x2 >> 0x33);
 uint64_t x10 = (x2 & 0x7ffffffffffff);
 uint64_t x11 = (x9 + x4);
 uint64_t x12 = (x11 >> 0x33);
 uint64_t x13 = (x11 & 0x7ffffffffffff);
 uint64_t x14 = (x12 + x6);
 uint64_t x15 = (x14 >> 0x33);
 uint64_t x16 = (x14 & 0x7ffffffffffff);
 uint64_t x17 = (x15 + x8);
 uint64_t x18 = (x17 >> 0x33);
 uint64_t x19 = (x17 & 0x7ffffffffffff);
 uint64_t x20 = (x18 + x7);
 uint64_t x21 = (x20 >> 0x33);
 uint64_t x22 = (x20 & 0x7ffffffffffff);
 uint64_t x23 = (x10 + (0x13 * x21));
 uint64_t x24 = (x23 >> 0x33);
 uint64_t x25 = (x23 & 0x7ffffffffffff);
 uint64_t x26 = (x24 + x13);
 uint64_t x27 = (x26 >> 0x33);
 uint64_t x28 = (x26 & 0x7ffffffffffff);
 return (Return x22, Return x19, (x27 + x16), Return x28, Return x25))
x
     : word64 * word64 * word64 * word64 * word64 → ReturnType (uint64_t * uint64_t * uint64_t * uint64_t * uint64_t)