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  1. #include <iostream>
  2. #include <stdint.h>
  3.  
  4. int main() {
  5. 	const auto n_hashbits = 5;
  6. 	auto magic = (1ull << 50) + (2ull << 39) + (3ull << 30) + (5ull << 21);
  7. 	std::cout << "Magic: " << std::hex << magic << std::dec << "\n";
  8.  
  9. 	for (auto square : {9, 11, 20, 29, 38}) {
  10. 		uint64_t bitboard = 1ull << square;
  11. 		uint64_t index = magic * bitboard;
  12. 		index >>= (64  - n_hashbits);
  13. 		std::cout << square << " => " << index << "\n";
  14. 	}
  15. }
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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Magic: 40100c0a00000
9 => 1
11 => 4
20 => 2
29 => 3
38 => 5
https://ideone.com/CygT3J
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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