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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running QNX Neutrino 7.1.
Utilities & Libraries
C Library Reference
Full Safety Information
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QNX Momentics IDE User's Guide
This User's Guide describes version 7.1 of the Integrated Development Environment (IDE) that's part of the QNX Momentics tool suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running QNX Neutrino 7.1.
- Quickstart Guide
- OS Components & Operations
- Audio & Graphics API
- Multimedia
- Networking Middleware
- Programming
- Sensor Framework
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX Neutrino RTOS system and developers who want to create a QNX Neutrino resource manager free from vulnerabilities.
- Utilities & Libraries
  - Addon Interfaces Library Reference
  - C Library Reference
    - What's in a Function Description?
    - Manifests
    - Character Sets
    - A
    - B
    - C
    - D
    - E
    - F
    - G
    - H
    - I
    - J
    - K
    - L
    - M
    - N
    - O
    - P
    - Q
    - R
    - S
    - T
    - U
    - V
    - W
    - X
    - Y
    - Z
    - Full Safety Information
      - A
      - B
      - C
      - D
      - E
      - F
      - G
      - H
      - I
      - J
      - K
      - L
      - M
      - N
      - O
      - P
      - Q
      - R
      - S
      - T
      - U
      - V
      - W
      - Y
    - Glossary
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - Utilities Reference
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
QNX Hypervisor
The QNX Hypervisor allows you to run multiple OSs on a target system so you can separate critical and non-critical functions, support a wide variety of applications, and reduce hardware costs.
QNX Software in the Cloud
QNX Software in the Cloud enables developers to use the QNX software in Amazon Web Services (AWS) and Microsoft Azure (Azure).
QNX Advanced Virtualization Frameworks User's Guide
This User's Guide is aimed at all systems integrators and developers who want to design and build embedded systems using the QNX Advanced Virtualization Frameworks.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support.

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Function	Classification	Library	Cancel	ISR	Signal	Thread
hcreate()	POSIX 1003.1 XSI	libc	No	No	No	No
hdestroy()	POSIX 1003.1 XSI	libc	No	No	No	No
herror()	Unix	libsocket	Yes	No	No	No
hsearch()	POSIX 1003.1	libc	No	No	Yes	No
hstrerror()	Unix	libsocket	No	No	Yes	Yes
htonl()	POSIX 1003.1	libc	No	Yes	Yes	Yes
htons()	POSIX 1003.1	libc	No	Yes	Yes	Yes
hwi_find()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_find_bus()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_find_compatible()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_find_device()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_find_devicebus()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_find_item()	QNX Neutrino	libc	No	Yes	Yes	Yes
hwi_find_num_units()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_find_tag()	QNX Neutrino	libc	No	Yes	Yes	Yes
hwi_find_unit()	QNX Neutrino	libdrvr	No	No	No	Yes
hwi_next_item()	QNX Neutrino	libc	No	Yes	Yes	Yes
hwi_next_tag()	QNX Neutrino	libc	No	Yes	Yes	Yes
hwi_off2tag()	QNX Neutrino	libc	No	Yes	Yes	Yes
hwi_tag2off()	QNX Neutrino	libc	No	Yes	Yes	Yes
hwi_tag_find()	QNX Neutrino	libdrvr	No	No	No	Yes
hwiattr_get()	QNX Neutrino	libdrvr	No	No	No	Yes
hwiattr_get_*()	QNX Neutrino	libdrvr	No	No	No	Yes
hwitag_find_busattr()	QNX Neutrino	libdrvr	No	No	No	Yes
hwitag_find_clkfreq()	QNX Neutrino	libdrvr	No	No	No	Yes
hwitag_find_errata()	QNX Neutrino	libdrvr	No	No	No	Yes
hwitag_find_ivec()	QNX Neutrino	libdrvr	No	No	No	Yes
hwitag_find_nicaddr()	QNX Neutrino	libdrvr	No	No	No	Yes
hwitag_find_phyaddr()	QNX Neutrino	libdrvr	No	No	No	Yes
hypot()	C11, POSIX 1003.1	libm, libm-sve	No	Yes	Yes	Yes
hypotf()	C11, POSIX 1003.1	libm, libm-sve	No	Yes	Yes	Yes
hypotl()	C11, POSIX 1003.1	libm, libm-sve	No	Yes	Yes	Yes

Page updated: March 12, 2026