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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.
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A
alignof(), __alignof_is_defined
Get the alignment of a type

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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 the QNX OS 8.0.
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    - A
      - abort()
        Raise the SIGABRT signal to terminate program execution
      - abs()
        Return the absolute value of an integer
      - access()
        Check to see if a file or directory can be accessed
      - acl_add_perm()
        Add a permission to an access control list (ACL) permissions set
      - acl_calc_mask()
        Calculate the group class mask for an access control list (ACL)
      - acl_clear_perms()
        Clear all permissions from an ACL permissions set
      - acl_copy_entry()
        Copy the contents of one ACL entry into another
      - acl_copy_ext()
        Copy an ACL from system space to user space
      - acl_copy_int()
        Copy an ACL from user space to system space
      - acl_create_entry()
        Create an entry in an access control list
      - acl_delete_entry()
        Delete an entry from an access control list (ACL)
      - acl_delete_perm()
        Delete a permission from an ACL permissions set
      - acl_dup()
        Duplicate an access control list (ACL) in a working storage area
      - acl_free()
        Free the working storage area allocated for an access control list (ACL) data object
      - acl_from_text()
        Create an access control list (ACL) from text
      - acl_get_entry()
        Get an entry in an access control list (ACL)
      - acl_get_fd()
        Get the access control list associated with a file descriptor
      - acl_get_file()
        Get the ACL for a given path
      - acl_get_perm_np()
        Test whether a given permission is present in an ACL permissions set
      - acl_get_permset()
        Get a permissions set from an ACL entry
      - acl_get_qualifier()
        Get the qualifier from an ACL entry
      - acl_get_tag_type()
        Get the type of tag from an ACL entry
      - acl_init()
        Allocate and initialize an access control list (ACL) working storage area
      - acl_set_fd()
        Set the access ACL for the object associated with a file descriptor
      - acl_set_file()
        Set the access control list for a path
      - acl_set_permset()
        Set the permissions set in an ACL entry
      - acl_set_qualifier()
        Set the qualifier for an ACL entry
      - acl_set_tag_type()
        Set the tag type of an ACL entry
      - acl_size()
        Determine the size of the external form of an ACL
      - acl_to_text()
        Convert an access control list (ACL) into text
      - acl_valid()
        Validate an access control list (ACL)
      - acos(), acosf(), acosl()
        Compute the arccosine of an angle
      - acosh(), acoshf(), acoshl()
        Compute the inverse hyperbolic cosine
      - aio_cancel()
        Cancel an asynchronous I/O operation
      - aio_error()
        Get the error status for an asynchronous I/O operation
      - aio_fsync()
        Asynchronously synchronize a file
      - aio_read(), aio_read64()
        Asynchronously read from a file
      - aio_return()
        Get the return status for an asynchronous I/O operation
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        Wait for asynchronous I/O operations to be completed
      - aio_write(), aio_write64()
        Asynchronously write to a file
      - aiocb, aiocb64
        Asynchronous I/O control block
      - alarm()
        Schedule an alarm
      - alignas, __alignas_is_defined
        Specify the alignment of an object
      - aligned_alloc()
        Allocate aligned memory
      - alignof(), __alignof_is_defined
        Get the alignment of a type
      - alloca()
        Allocate automatic space from the stack
      - alphasort()
        Compare two directory entries
      - _amblksiz
        The arena size for heap allocations
      - _argc
        The number of arguments passed to main()
      - _argv
        A pointer to the vector of arguments passed to main()
      - asctime(), asctime_r()
        Convert time information to a string
      - asin(), asinf(), asinl()
        Compute the arcsine of an angle
      - asinh(), asinhf(), asinhl()
        Compute the inverse hyperbolic sine
      - asprintf()
        Write formatted output into an allocated string
      - assert()
        Display a diagnostic message and optionally terminate the program
      - at_quick_exit()
        Register functions to be called during program termination via quick_exit()
      - atan(), atanf(), atanl()
        Compute the arctangent of an angle
      - atan2(), atan2f(), atan2l()
        Compute the arctangent, determining the quadrant
      - atanh(), atanhf(), atanhl()
        Compute an inverse hyperbolic tangent
      - atexit()
        Register functions to be called during normal program termination
      - atof()
        Convert a string into a double
      - atoi()
        Convert a string into an integer
      - atol(), atoll()
        Convert a string into a long integer
      - ATOMIC_*_LOCK_FREE
        Macros that indicate whether an atomic type is lock-free (C11)
      - atomic_*
        Data types for atomic operations (C11)
      - atomic_add()
        Safely add to a variable (QNX OS)
      - atomic_add_value()
        Safely add to a variable, returning the previous value (QNX OS)
      - atomic_clr()
        Safely clear bits in a variable (QNX OS)
      - atomic_clr_value()
        Safely clear bits in a variable, returning the previous value (QNX OS)
      - atomic_compare_exchange_strong(), atomic_compare_exchange_strong_explicit(), atomic_compare_exchange_weak(), atomic_compare_exchange_weak_explicit()
        Compare and potentially exchange the value of an atomic object (C11)
      - atomic_exchange(), atomic_exchange_explicit()
        Atomically change the value of an atomic object (C11)
      - atomic_fetch_add(), atomic_fetch_add_explicit()
        Atomically add to the value of an atomic object (C11)
      - atomic_fetch_and(), atomic_fetch_and_explicit()
        Atomically AND a value into an atomic object (C11)
      - atomic_fetch_or(), atomic_fetch_or_explicit()
        Atomically OR a value into an atomic object (C11)
      - atomic_fetch_sub(), atomic_fetch_sub_explicit()
        Atomically subtract the value of an atomic object (C11)
      - atomic_fetch_xor(), atomic_fetch_xor_explicit()
        Atomically XOR a value into an atomic object (C11)
      - atomic_flag_clear(), atomic_flag_clear_explicit()
        Atomically clear a flag (C11)
      - atomic_flag_test_and_set(), atomic_flag_test_and_set_explicit()
        Atomically set a flag (C11)
      - atomic_init()
        Initialize an atomic object (C11)
      - atomic_is_lock_free()
        Determine whether atomic operations on an object are lock-free (C11)
      - atomic_load(), atomic_load_explicit()
        Atomically read the value of an atomic object (C11)
      - atomic_set()
        Safely set bits in a variable (QNX OS)
      - atomic_set_value()
        Safely set bits in a variable, returning the previous value (QNX OS)
      - atomic_signal_fence()
        Fence between a thread and a signal handler executed in the same thread (C11)
      - atomic_store(), atomic_store_explicit()
        Atomically set the value of an atomic object (C11)
      - atomic_sub()
        Safely subtract from a variable (QNX OS)
      - atomic_sub_value()
        Safely subtract from a variable, returning the previous value (QNX OS)
      - atomic_thread_fence()
        Generic memory order-dependent fence synchronization primitive (C11)
      - atomic_toggle()
        Safely toggle bits in a variable (QNX OS)
      - atomic_toggle_value()
        Safely toggle bits in a variable, returning the previous value (QNX OS)
      - _auxv
        A pointer to a vector of auxiliary arguments to main()
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alignof(), __alignof_is_defined

QNX SDP8.0C Library ReferenceAPIDeveloper

Get the alignment of a type

Synopsis:

#include <stdalign.h>

#define __alignof_is_defined	1

#ifndef __cplusplus
#define alignof	_Alignof;
#endif /* __cplusplus */

Description:

The alignof() macro expands to the C11 _Alignof() operator, which returns the alignment requirements of the given type:

_Alignof( type )

where type is any type name. The result is an integer constant of type size_t.

The value of __alignof_is_defined is 1.

Classification:

C11

Page updated: August 09, 2024