a "dense" string represents occupancies of a set of Ns states by a bitstring
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#include <chemistry/qc/nbody/string.h>
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typedef boost::dynamic_bitset | parent_type |
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typedef size_t | state_index_type |
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a "dense" string represents occupancies of a set of Ns states by a bitstring
- Template Parameters
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◆ FermionOccupationDBitString()
sc::FermionOccupationDBitString::FermionOccupationDBitString |
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size_t |
N, |
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const std::vector< state_index_type > & |
occupied_states |
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) |
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inlineexplicit |
◆ add()
Adds a particle to_ state to_.
Unsafe, but fast.
- Parameters
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to_ | the state to_ which the particle will be added. The current status of the state is not checked. |
- Returns
- reference to_ this string, for chaining operations (e.g. a.remove(0).remove(7).add(13) etc.)
◆ count() [1/2]
size_t sc::FermionOccupationDBitString::count |
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const |
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inline |
Reports the number of occupied states.
- Returns
- the number of occupied states
Referenced by count().
◆ count() [2/2]
size_t sc::FermionOccupationDBitString::count |
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size_t |
pos1, |
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size_t |
pos2 |
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) |
| const |
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inline |
counts the number of bits in (pos1,pos2) (assumes pos2 >= pos1)
- Parameters
-
- Returns
References count().
◆ empty()
bool sc::FermionOccupationDBitString::empty |
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const |
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inline |
are all states empty?
- Returns
- true if all states are empty
◆ remove()
Removes a particle from_ state from_.
Unsafe, but fast.
- Parameters
-
from_ | the state from_ which the particle will be removed. The current status of the state is not checked. |
- Returns
- reference to_ this string, for chaining operations (e.g. a.remove(0).remove(7).add(13) etc.)
The documentation for this class was generated from the following file: