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51 lines
1.5 KiB
ReStructuredText
51 lines
1.5 KiB
ReStructuredText
==============
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Bitmask Module
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==============
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The central part of this module is the ``bitmasks_module.f90`` file. It contains
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the constants that will be used to define on which kind of integer the bitmasks
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will be defined.
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In the program, when an integer ``X`` is used to represent a bit string (like a determinant
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for example), it should be defined as, for example:
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.. code-block:: fortran
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use bitmasks
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integer(bit_kind) :: X
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The ``bitmasks_routines.irp.f`` contains helper routines to manipulate bitmassk, like
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transforming a bit string to a list of integers for example.
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Assumptions
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===========
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.. Do not edit this section. It was auto-generated from the
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.. ASSUMPTIONS.rst file.
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``bit_kind_shift``, ``bit_kind_size`` and ``bit_kind`` are coherent:
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.. code_block:: fortran
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2**bit_kind_shift = bit_kind_size
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bit_kind = bit_kind_size / 8
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Needed Modules
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==============
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.. Do not edit this section. It was auto-generated from the
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.. NEEDED_MODULES file.
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* `AOs <http://github.com/LCPQ/quantum_package/tree/master/src/AOs>`_
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* `Electrons <http://github.com/LCPQ/quantum_package/tree/master/src/Electrons>`_
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* `Ezfio_files <http://github.com/LCPQ/quantum_package/tree/master/src/Ezfio_files>`_
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* `MOs <http://github.com/LCPQ/quantum_package/tree/master/src/MOs>`_
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* `Nuclei <http://github.com/LCPQ/quantum_package/tree/master/src/Nuclei>`_
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* `Output <http://github.com/LCPQ/quantum_package/tree/master/src/Output>`_
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* `Utils <http://github.com/LCPQ/quantum_package/tree/master/src/Utils>`_
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