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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 the QNX OS 8.0.
Utilities & Libraries
C Library Reference
T
timespec2nsec()
Convert a timespec structure to nanoseconds

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX 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 the QNX OS 8.0.
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        Get information about a timer
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        Set a timeout on a blocking state
      - times()
        Get time-accounting information
      - timespec
        Time-specification structure
      - timespec_get()
        Get the number of seconds and nanoseconds since a given epoch
      - timespec2nsec()
        Convert a timespec structure to nanoseconds
      - timezone
        The number of seconds by which the local time zone is earlier than UTC
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        Structure that describes calendar time
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        Process trace data
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        The abbreviations for the time zone for standard and daylight savings time
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        Set the time according to the current time zone
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Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

timespec2nsec()

QNX SDP8.0C Library ReferenceAPIDeveloper

Convert a timespec structure to nanoseconds

Synopsis:

#include <time.h>

uint64_t timespec2nsec( const struct timespec* ts );

Arguments:

ts: A pointer to the timespec that you want to convert to nanoseconds.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The timespec2nsec() function converts the number of seconds and nanoseconds in the timespec structure pointed to by ts into nanoseconds.

Note:

Don't pass in negative values in the timespec fields. No validation of these fields is done and the results are undefined in this case.

Returns:

The number of nanoseconds. If the calculated value causes an overflow, the returned value is the highest number that can be stored in a uint64_t (i.e., UINT64_MAX).

Classification:

QNX OS


Safety:
Cancellation point	No
Signal handler	Yes
Thread	Yes

Page updated: December 04, 2024