Doubles have 52 bits. The 53rd bit is the implied leading "1".

Update: As pointed out by oshalla, the implied bit does count. As pointed out by BrowserUk, I forgot about the sign bit. So there's 54 bits of precision for signed integers.

In reply to Re^3: 64-bit digest algorithms by ikegami
in thread 64-bit digest algorithms by BrowserUk

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