Prime decomposition: Difference between revisions
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(→{{header|C}}: prime decomposition of a number N (64-bit) in C language) |
(→Version 2: correction about the square root algorithm.) |
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ulong square_root(const ulong N) { |
ulong square_root(const ulong N) { |
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ulong res = 0, rem = N, c, d; |
ulong res = 0, rem = N, c, d; |
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for (c = 1 << |
for (c = 1 << 62; c; c >>= 2) { |
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d = res + c; |
d = res + c; |
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res >>= 1; |
res >>= 1; |
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