> For the complete documentation index, see [llms.txt](https://leontm-systems.gitbook.io/spiyk.js/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://leontm-systems.gitbook.io/spiyk.js/start-coding/functions-and-code/math/fmod-x.md).

# fmod(x)