Revision b484fdebfd316e42c82dc695a9aa3e4e60eeea4f authored by Hanno Rein on 22 September 2023, 20:58:04 UTC, committed by Hanno Rein on 22 September 2023, 20:58:04 UTC
1 parent cba329c
miscellaneous.md
# Miscellaneous tools
## Modulo two pi
The following function takes the modulo of angle (in radians).
The result is in the range $[0, 2\pi]$.
=== "C"
```c
double f = reb_tools_mod2pi(7.); // returns 0.7168 = 7 - 2*pi
```
=== "Python"
```python
f = rebound.mod2pi(7.) // returns 0.7168 = 7 - 2*pi
```
## Hash function
REBOUND comes with its own hash function.
It converts a string to an integer.
This is used in various parts of the code, mostly to add a more convenient way to refer to particles.
You can call REBOUND's hash function manually:
=== "C"
```c
uint32_t hash = reb_hash("test string");
```
=== "Python"
```python
hash = rebound.hash("test string")
```
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