λ x : word64 * word64 * word64 * word64 * word64 * word64 * word64 * word64 * word64 * word64,
Interp-η
(λ var : Syntax.base_type → Type,
 λ '(x17, x18, x16, x14, x12, x10, x8, x6, x4, x2)%core,
 uint128_t x19 = (((uint128_t)x2 * x17) + (((uint128_t)x4 * x18) + (((uint128_t)x6 * x16) + (((uint128_t)x8 * x14) + (((uint128_t)x10 * x12) + (((uint128_t)x12 * x10) + (((uint128_t)x14 * x8) + (((uint128_t)x16 * x6) + (((uint128_t)x18 * x4) + ((uint128_t)x17 * x2))))))))));
 uint128_t x20 = ((((uint128_t)x2 * x18) + (((uint128_t)x4 * x16) + (((uint128_t)x6 * x14) + (((uint128_t)x8 * x12) + (((uint128_t)x10 * x10) + (((uint128_t)x12 * x8) + (((uint128_t)x14 * x6) + (((uint128_t)x16 * x4) + ((uint128_t)x18 * x2))))))))) + (0x15 * (0x2 * ((uint128_t)x17 * x17))));
 uint128_t x21 = ((((uint128_t)x2 * x16) + (((uint128_t)x4 * x14) + (((uint128_t)x6 * x12) + (((uint128_t)x8 * x10) + (((uint128_t)x10 * x8) + (((uint128_t)x12 * x6) + (((uint128_t)x14 * x4) + ((uint128_t)x16 * x2)))))))) + (0x15 * ((0x2 * ((uint128_t)x18 * x17)) + (0x2 * ((uint128_t)x17 * x18)))));
 uint128_t x22 = ((((uint128_t)x2 * x14) + (((uint128_t)x4 * x12) + (((uint128_t)x6 * x10) + (((uint128_t)x8 * x8) + (((uint128_t)x10 * x6) + (((uint128_t)x12 * x4) + ((uint128_t)x14 * x2))))))) + (0x15 * ((0x2 * ((uint128_t)x16 * x17)) + ((0x2 * ((uint128_t)x18 * x18)) + (0x2 * ((uint128_t)x17 * x16))))));
 uint128_t x23 = ((((uint128_t)x2 * x12) + (((uint128_t)x4 * x10) + (((uint128_t)x6 * x8) + (((uint128_t)x8 * x6) + (((uint128_t)x10 * x4) + ((uint128_t)x12 * x2)))))) + (0x15 * ((0x2 * ((uint128_t)x14 * x17)) + ((0x2 * ((uint128_t)x16 * x18)) + ((0x2 * ((uint128_t)x18 * x16)) + (0x2 * ((uint128_t)x17 * x14)))))));
 uint128_t x24 = ((((uint128_t)x2 * x10) + (((uint128_t)x4 * x8) + (((uint128_t)x6 * x6) + (((uint128_t)x8 * x4) + ((uint128_t)x10 * x2))))) + (0x15 * ((0x2 * ((uint128_t)x12 * x17)) + ((0x2 * ((uint128_t)x14 * x18)) + ((0x2 * ((uint128_t)x16 * x16)) + ((0x2 * ((uint128_t)x18 * x14)) + (0x2 * ((uint128_t)x17 * x12))))))));
 uint128_t x25 = ((((uint128_t)x2 * x8) + (((uint128_t)x4 * x6) + (((uint128_t)x6 * x4) + ((uint128_t)x8 * x2)))) + (0x15 * ((0x2 * ((uint128_t)x10 * x17)) + ((0x2 * ((uint128_t)x12 * x18)) + ((0x2 * ((uint128_t)x14 * x16)) + ((0x2 * ((uint128_t)x16 * x14)) + ((0x2 * ((uint128_t)x18 * x12)) + (0x2 * ((uint128_t)x17 * x10)))))))));
 uint128_t x26 = ((((uint128_t)x2 * x6) + (((uint128_t)x4 * x4) + ((uint128_t)x6 * x2))) + (0x15 * ((0x2 * ((uint128_t)x8 * x17)) + ((0x2 * ((uint128_t)x10 * x18)) + ((0x2 * ((uint128_t)x12 * x16)) + ((0x2 * ((uint128_t)x14 * x14)) + ((0x2 * ((uint128_t)x16 * x12)) + ((0x2 * ((uint128_t)x18 * x10)) + (0x2 * ((uint128_t)x17 * x8))))))))));
 uint128_t x27 = ((((uint128_t)x2 * x4) + ((uint128_t)x4 * x2)) + (0x15 * ((0x2 * ((uint128_t)x6 * x17)) + ((0x2 * ((uint128_t)x8 * x18)) + ((0x2 * ((uint128_t)x10 * x16)) + ((0x2 * ((uint128_t)x12 * x14)) + ((0x2 * ((uint128_t)x14 * x12)) + ((0x2 * ((uint128_t)x16 * x10)) + ((0x2 * ((uint128_t)x18 * x8)) + (0x2 * ((uint128_t)x17 * x6)))))))))));
 uint128_t x28 = (((uint128_t)x2 * x2) + (0x15 * ((0x2 * ((uint128_t)x4 * x17)) + ((0x2 * ((uint128_t)x6 * x18)) + ((0x2 * ((uint128_t)x8 * x16)) + ((0x2 * ((uint128_t)x10 * x14)) + ((0x2 * ((uint128_t)x12 * x12)) + ((0x2 * ((uint128_t)x14 * x10)) + ((0x2 * ((uint128_t)x16 * x8)) + ((0x2 * ((uint128_t)x18 * x6)) + (0x2 * ((uint128_t)x17 * x4))))))))))));
 uint64_t x29 = (uint64_t) (x28 >> 0x31);
 uint64_t x30 = ((uint64_t)x28 & 0x1ffffffffffff);
 uint128_t x31 = (x29 + x27);
 uint64_t x32 = (uint64_t) (x31 >> 0x31);
 uint64_t x33 = ((uint64_t)x31 & 0x1ffffffffffff);
 uint128_t x34 = (x32 + x26);
 uint64_t x35 = (uint64_t) (x34 >> 0x31);
 uint64_t x36 = ((uint64_t)x34 & 0x1ffffffffffff);
 uint128_t x37 = (x35 + x25);
 uint64_t x38 = (uint64_t) (x37 >> 0x31);
 uint64_t x39 = ((uint64_t)x37 & 0x1ffffffffffff);
 uint128_t x40 = (x38 + x24);
 uint64_t x41 = (uint64_t) (x40 >> 0x31);
 uint64_t x42 = ((uint64_t)x40 & 0x1ffffffffffff);
 uint128_t x43 = (x41 + x23);
 uint64_t x44 = (uint64_t) (x43 >> 0x31);
 uint64_t x45 = ((uint64_t)x43 & 0x1ffffffffffff);
 uint128_t x46 = (x44 + x22);
 uint64_t x47 = (uint64_t) (x46 >> 0x31);
 uint64_t x48 = ((uint64_t)x46 & 0x1ffffffffffff);
 uint128_t x49 = (x47 + x21);
 uint64_t x50 = (uint64_t) (x49 >> 0x31);
 uint64_t x51 = ((uint64_t)x49 & 0x1ffffffffffff);
 uint128_t x52 = (x50 + x20);
 uint64_t x53 = (uint64_t) (x52 >> 0x31);
 uint64_t x54 = ((uint64_t)x52 & 0x1ffffffffffff);
 uint128_t x55 = (x53 + x19);
 uint64_t x56 = (uint64_t) (x55 >> 0x30);
 uint64_t x57 = ((uint64_t)x55 & 0xffffffffffff);
 uint64_t x58 = (x30 + (0x15 * x56));
 uint64_t x59 = (x58 >> 0x31);
 uint64_t x60 = (x58 & 0x1ffffffffffff);
 uint64_t x61 = (x59 + x33);
 uint64_t x62 = (x61 >> 0x31);
 uint64_t x63 = (x61 & 0x1ffffffffffff);
 return (Return x57, Return x54, Return x51, Return x48, Return x45, Return x42, Return x39, (x62 + x36), Return x63, Return x60))
x
     : 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 * uint64_t * uint64_t)