21 lines
441 B
Solidity
21 lines
441 B
Solidity
pragma solidity =0.5.16;
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library Math {
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function min(uint x, uint y) internal pure returns (uint z) {
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z = x <= y ? x : y;
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}
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function sqrt(uint y) internal pure returns (uint z) {
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if (y > 3) {
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uint x = y / 2 + 1;
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z = y;
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while (x < z) {
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z = x;
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x = (y / x + x) / 2;
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}
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} else if (y != 0) {
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z = 1;
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}
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}
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}
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