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=========================
Bitwise Utility Functions
=========================
.. include:: check.rst
---------------
Source Location
---------------
- The main source for bitwise utility functions is located at:
``libc/src/stdbit``.
- The source for internal helpers used to implement these is located at:
``libc/src/__support/CPP/bit.h``.
- The tests are located at:
``libc/test/src/stdbit/``, ``libc/test/include/stdbit_test.cpp``, and
``src/__support/CPP/bit_test.cpp``.
---------------------
Implementation Status
---------------------
Functions
=========
..
Do not order these, they are as they appear in the standard.
============================ =========
Function Name Available
============================ =========
stdc_leading_zeros_uc |check|
stdc_leading_zeros_us |check|
stdc_leading_zeros_ui |check|
stdc_leading_zeros_ul |check|
stdc_leading_zeros_ull |check|
stdc_leading_ones_uc |check|
stdc_leading_ones_us |check|
stdc_leading_ones_ui |check|
stdc_leading_ones_ul |check|
stdc_leading_ones_ull |check|
stdc_trailing_zeros_uc |check|
stdc_trailing_zeros_us |check|
stdc_trailing_zeros_ui |check|
stdc_trailing_zeros_ul |check|
stdc_trailing_zeros_ull |check|
stdc_trailing_ones_uc |check|
stdc_trailing_ones_us |check|
stdc_trailing_ones_ui |check|
stdc_trailing_ones_ul |check|
stdc_trailing_ones_ull |check|
stdc_first_leading_zero_uc |check|
stdc_first_leading_zero_us |check|
stdc_first_leading_zero_ui |check|
stdc_first_leading_zero_ul |check|
stdc_first_leading_zero_ull |check|
stdc_first_leading_one_uc |check|
stdc_first_leading_one_us |check|
stdc_first_leading_one_ui |check|
stdc_first_leading_one_ul |check|
stdc_first_leading_one_ull |check|
stdc_first_trailing_zero_uc |check|
stdc_first_trailing_zero_us |check|
stdc_first_trailing_zero_ui |check|
stdc_first_trailing_zero_ul |check|
stdc_first_trailing_zero_ull |check|
stdc_first_trailing_one_uc |check|
stdc_first_trailing_one_us |check|
stdc_first_trailing_one_ui |check|
stdc_first_trailing_one_ul |check|
stdc_first_trailing_one_ull |check|
stdc_count_zeros_uc |check|
stdc_count_zeros_us |check|
stdc_count_zeros_ui |check|
stdc_count_zeros_ul |check|
stdc_count_zeros_ull |check|
stdc_count_ones_uc |check|
stdc_count_ones_us |check|
stdc_count_ones_ui |check|
stdc_count_ones_ul |check|
stdc_count_ones_ull |check|
stdc_has_single_bit_uc |check|
stdc_has_single_bit_us |check|
stdc_has_single_bit_ui |check|
stdc_has_single_bit_ul |check|
stdc_has_single_bit_ull |check|
stdc_bit_width_uc |check|
stdc_bit_width_us |check|
stdc_bit_width_ui |check|
stdc_bit_width_ul |check|
stdc_bit_width_ull |check|
stdc_bit_floor_uc |check|
stdc_bit_floor_us |check|
stdc_bit_floor_ui |check|
stdc_bit_floor_ul |check|
stdc_bit_floor_ull |check|
stdc_bit_ceil_uc |check|
stdc_bit_ceil_us |check|
stdc_bit_ceil_ui |check|
stdc_bit_ceil_ul |check|
stdc_bit_ceil_ull |check|
============================ =========
Macros
======
========================= =========
Macro Name Available
========================= =========
__STDC_VERSION_STDBIT_H__
__STDC_ENDIAN_LITTLE__
__STDC_ENDIAN_BIG__
__STDC_ENDIAN_NATIVE__
stdc_leading_zeros |check|
stdc_leading_ones |check|
stdc_trailing_zeros |check|
stdc_trailing_ones |check|
stdc_first_leading_zero |check|
stdc_first_leading_one |check|
stdc_first_trailing_zero |check|
stdc_first_trailing_one |check|
stdc_count_zeros |check|
stdc_count_ones |check|
stdc_has_single_bit |check|
stdc_bit_width |check|
stdc_bit_floor |check|
stdc_bit_ceil |check|
========================= =========
Standards
=========
stdbit.h was specified as part of C23 in section 7.18 "Bit and byte utilities."
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