---
title: os Constants
framework: os
role: collectionGroup
role_heading: API Collection
path: os/os-constants
---

# os Constants

## Topics

### Constants

- [OS_ATOMIC_USES_CXX](os/os_atomic_uses_cxx.md)
- [OS_LOG_TARGET_HAS_10_12_FEATURES](os/os_log_target_has_10_12_features.md)
- [OS_LOG_TARGET_HAS_10_13_FEATURES](os/os_log_target_has_10_13_features.md)
- [OS_LOG_TARGET_HAS_10_14_FEATURES](os/os_log_target_has_10_14_features.md)
- [OS_LOG_TARGET_HAS_10_15_FEATURES](os/os_log_target_has_10_15_features.md)