> ## Documentation Index > Fetch the complete documentation index at: https://takeprofit.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Package indie.math Utility functions for simple calculations in Indie indicators. *** ## Functions ### `cross()` *function* **1. Overloads** cross (src1, src2) -> bool Checks if two series just have crossed each other. **parameters info** src1 indie.Series\[float] required First series to make crossing check. src2 indie.Series\[float] required Second series to make crossing check. cross (src, level) -> bool Checks if two series just have crossed each other. **parameters info** src indie.Series\[float] required Series to make crossing check. level float required Constant level to make crossing check. *** ### `cross_over()` *function* **1. Overloads** cross\_over (src1, src2) -> bool Checks if the first series just have crossed over the second one. **parameters info** src1 indie.Series\[float] required First series to make crossing check. src2 indie.Series\[float] required Second series to make crossing check. cross\_over (src, level) -> bool Checks if the first series just have crossed over the second one. **parameters info** src indie.Series\[float] required Series to make crossing check. level float required Constant level to make crossing check. *** ### `cross_under()` *function* **1. Overloads** cross\_under (src1, src2) -> bool Checks if the first series just have crossed under the second one. **parameters info** src1 indie.Series\[float] required First series to make crossing check. src2 indie.Series\[float] required Second series to make crossing check. cross\_under (src, level) -> bool Checks if the first series just have crossed under the second one. **parameters info** src indie.Series\[float] required Series to make crossing check. level float required Constant level to make crossing check. *** ### `divide()` *function* **1. Overloads** divide (numerator, denominator, default) -> float Safely divides two numbers, returning a default value if the denominator is near zero. **parameters info** numerator float required Numerator. denominator float required Denominator. default float default: math.nan Default value. *** This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.