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Update Memory usage of st wslda authored by Gabriel Wlazłowski's avatar Gabriel Wlazłowski
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# Arythemtics # Arithmetics
Static codes support two types arithmetics: Static codes support two types of arithmetics:
* `double complex`: `ELEMENT_SIZE=16B` * `double complex`: `ELEMENT_SIZE=16B`
default mode: matrix elements of hamiltonian are assumed to be of complex numbers. default mode: matrix elements of hamiltonian are assumed to be of complex numbers.
* `double`: `ELEMENT_SIZE=8B` * `double`: `ELEMENT_SIZE=8B`
if you know that matrix elements, as well as the solution, will be real numbers (for examples based on symmetries of your problem) you can speed-up the calculation process by switching to double arythmetics. To do this you need to activate in [predefines.h](https://gitlab.fizyka.pw.edu.pl/gabrielw/wslda/-/blob/public/st-project-template/predefines.h) flag: if you know that matrix elements, as well as the solution, will be real numbers (for examples based on symmetries of your problem) you can speed-up the calculation process by switching to double arithmetics. To do this you need to activate in [predefines.h](https://gitlab.fizyka.pw.edu.pl/gabrielw/wslda/-/blob/public/st-project-template/predefines.h) flag:
```c ```c
/** /**
* activate this if you know that Hamiltonian matrix is real, * activate this if you know that Hamiltonian matrix is real,
......