# Wrong results in calculation

**URL:** <https://discourse.julialang.org/t/wrong-results-in-calculation/21567>\
**Category:** Performance\
**Created:** [March 7, 2019, 12:14pm UTC](https://discourse.julialang.org/t/wrong-results-in-calculation/21567 "2019-03-07T12:14:24Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![Jean\_Michel](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jean_michel/32/8282_2.png) [@Jean\_Michel](https://discourse.julialang.org/u/Jean_Michel)\
**Post date:** [March 11, 2019, 6:29pm UTC](https://discourse.julialang.org/t/wrong-results-in-calculation/21567/16 "2019-03-11T18:29:56Z")

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I have quite a few algorithms I programmed which behave as I claim. I showed in the forum  
when I was learning Julia last year two toy examples:

-Computing the inverse of a Hilbert matrix:  
[Julia slow with Hilbert matrices](https://discourse.julialang.org/t/julia-slow-with-hilbert-matrices/7905)

-Computing the collatz function:  
[A plea for int overflow checking as the default - #46 by Olof\_Salberger](https://discourse.julialang.org/t/a-plea-for-int-overflow-checking-as-the-default/3338/46)

I have many serious programs behaving the same way, but they are a bit too technical to give in this forum

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