this post was submitted on 28 Jun 2024
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Actually we don't know whether 2+3 equals to 3+2 without seeing the definition of the + operator
If
1 x 0 = 0
And
2 x 0 = 0
Then 1 = 2.
And this folks is why you don’t hire “math teachers” because he was a successful football coach. It took him way too long to realize this is why we don’t divide by zero, (more than a week, actually.)
Fun fact: C doesn't even guarantee
a + b == a + b*If a and b are
floatOr signed integers because overflow is undefined. It could do the left-hand computation in two's complement and the right hand in sign-magnitude, leading to different results. Or, as it's undefined, it could brew you some coffee and serve it with an aspirin.
C doesn't even guarantee a == a
That's decidedly unfun and headhurty for those of us less mathemstically inclined. Also so deep into the theoretical weeds that I'm not sure that "fact" applies..
One night I dreamt about the new C standard. It was a tome of ten thousand pages, in dense, tiny, font, three columns of text on each page, and it was all headings and sub-headings interspersed with nothing but either "undefined" or "implementation-defined".