javascript - bitwise OR unexpected result -

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this line of code:

console.log((90000000000000|0).tostring());

output:

-1039687680  ( bin -111101111110000110000000000000 )

according 32-bit signed integer conversion, expect:

/--discarded--\/---------significant----------\ 10100011101101011000010000001111010000000000000    = 90000000000000                               │                11000010000001111010000000000000 or                00000000000000000000000000000000                ================================                11000010000001111010000000000000    = -1107795968            sign/\------significant bits-------/

why obtain -1039687680 instead of -1107795968?

as mentioned in post linked, it's in two's complement format.

negative 11000010000001111010000000000000 xor 1 plus 1 equals

positive 11110111111000011000000000000000, 1039687680

finally -1039687680 gained.


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