# Normalizing a vector to sum to one does not work?

**URL:** <https://discourse.julialang.org/t/normalizing-a-vector-to-sum-to-one-does-not-work/69560>\
**Category:** General Usage\
**Tags:** numbers, vector\
**Created:** [October 11, 2021, 11:27am UTC](https://discourse.julialang.org/t/normalizing-a-vector-to-sum-to-one-does-not-work/69560 "2021-10-11T11:27:13Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**Author:** ![Sukera](https://avatars.discourse-cdn.com/v4/letter/s/ce7236/32.png) [@Sukera](https://discourse.julialang.org/u/Sukera)\
**Post date:** [October 11, 2021, 12:41pm UTC](https://discourse.julialang.org/t/normalizing-a-vector-to-sum-to-one-does-not-work/69560/8 "2021-10-11T12:41:26Z")

</div>

I think this is relevant here:

> [@PSA: floating-point arithmetic](https://discourse.julialang.org/t/psa-floating-point-arithmetic/8678):
>
> Sometimes people are surprised by the results of floating-point calculations such as julia\> 5/6 0.8333333333333334 # shouldn't the last digit be 3? julia\> 2.6 - 0.7 - 1.9 2.220446049250313e-16 # shouldn't the answer be 0? These are not bugs in Julia. They’re consequences of the IEEE-standard 64-bit binary representation of floating-point numbers that is burned into computer hardware, which Julia and many other languages use by default. Brief explanation You can t…

---

_[View the full topic](https://discourse.julialang.org/t/normalizing-a-vector-to-sum-to-one-does-not-work/69560)._