---
title: ilogb
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.10+]
path: kernel/1557252-ilogb
---

# ilogb

## Declaration

```occ
int ilogb(double);
```

## See Also

### Logarithms

- [ilogbf](kernel/1557293-ilogbf.md)
- [ilogbl](kernel/1557245-ilogbl.md)
- [log](kernel/1516025-log.md)
- [log10](kernel/1557202-log10.md)
- [log10f](kernel/1532188-log10f.md)
- [log10l](kernel/1557363-log10l.md)
- [log1p](kernel/1557187-log1p.md)
- [log1pf](kernel/1557337-log1pf.md)
- [log1pl](kernel/1557274-log1pl.md)
- [log2](kernel/1557246-log2.md)
- [log2f](kernel/1557332-log2f.md)
- [log2l](kernel/1557169-log2l.md)
- [logb](kernel/1557235-logb.md)
- [logbf](kernel/1557288-logbf.md)
- [logbl](kernel/1557168-logbl.md)
- [logf](kernel/1532186-logf.md)
- [logl](kernel/1557184-logl.md)
- [lgamma](kernel/1557344-lgamma.md)
- [lgammaf](kernel/1557160-lgammaf.md)
- [lgammal](kernel/1557282-lgammal.md)