Some bank cards run on 32 bit systems.

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11 Oct 2024, 5:49 pm

Some bank cards run on 32 bit systems.
so if you try and transfer $21,474,836.48 to someone,
you will notice that you don't have $21 million

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funeralxempire
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11 Oct 2024, 6:03 pm

I don't need to check my account to know I don't have $21 million. :lol:

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Carbonhalo
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11 Oct 2024, 6:07 pm

Never even new your name was on an international money laundering account?
You did have $21 million...I withdrew it yesterday (in two transactions)

TheresaAldritch
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11 Oct 2024, 8:15 pm

The punchline is that 2147482648 is one over the limit of 32 bit system, so you'd expect some sort of bug to happen. But instead of explaining a bug, I just told you you didn't have 2147483648 cents.

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Cornflake
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12 Oct 2024, 8:18 am

Just because some banking system is running 32-bit software wouldn't automatically mean that numbers can only be represented in 32 bits by that software.

IOW there is no 32-bit limit imposed on transactions (and BTW, the maximum 32-bit unsigned integer is 4,294,967,296 - or using signed integers, -2,147,483,648 to 2,147,483,647).

Check out floating point binary representation - for example: https://en.wikipedia.org/wiki/Floating-point_arithmetic

Wikipedia wrote:

On a typical computer system, a double-precision (64-bit) binary floating-point number has a coefficient of 53 bits (including 1 implied bit), an exponent of 11 bits, and 1 sign bit. Since 2¹⁰ = 1024, the complete range of the positive normal floating-point numbers in this format is from 2⁻¹⁰²² ≈ 2 × 10⁻³⁰⁸ to approximately 2¹⁰²⁴ ≈ 2 × 10³⁰⁸

obv.

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Some bank cards run on 32 bit systems.