# Poor performance of the cis() function

**URL:** <https://discourse.julialang.org/t/poor-performance-of-the-cis-function/3402>\
**Category:** General Usage\
**Tags:** performance\
**Created:** [April 27, 2017, 12:18pm UTC](https://discourse.julialang.org/t/poor-performance-of-the-cis-function/3402 "2017-04-27T12:18:20Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![DNF](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dnf/32/10191_2.png) [@DNF](https://discourse.julialang.org/u/DNF)\
**Post date:** [April 28, 2017, 2:54pm UTC](https://discourse.julialang.org/t/poor-performance-of-the-cis-function/3402/9 "2017-04-28T14:54:29Z")

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Take a look at [this](https://discourse.julialang.org/t/why-is-this-julia-code-considerably-slower-than-matlab/2365) thread, where there is a similar discussion, and with examples of using a vector library (AppleAccelerate in that case) to speed up cis.

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_[View the full topic](https://discourse.julialang.org/t/poor-performance-of-the-cis-function/3402)._