Nstrophy/src/driving.c

/*
Copyright 2017-2024 Ian Jauslin

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

#include "driving.h"
#include "navier-stokes.h"
#include "io.h"
#include <math.h>

// test driving function
int g_test(
  _Complex double* g,
  int K1,
  int K2
){
  int kx,ky;
  for(kx=0;kx<=K1;kx++){
    for(ky=(kx>0 ? -K2 : 1);ky<=K2;ky++){
      if(kx==2 && ky==-1){
	g[klookup_sym(kx,ky,K2)]=0.5+sqrt(3)/2*I;
      }
      else{
        g[klookup_sym(kx,ky,K2)]=0.;
      }
    }
  }

  return 0;
}

int g_zero(
  _Complex double* g,
  int K1,
  int K2
){
  int i;
  for(i=0;i<K1*(2*K2+1)+K2;i++){
    g[i]=0.;
  }

  return 0;
}

// From file
// txt input
int driving_file_txt (
  _Complex double* g,
  int K1,
  int K2,
  FILE* file
){
  read_vec(g, K1, K2, file);
  return 0;
}
// binary input
int driving_file_bin (
  _Complex double* g,
  int K1,
  int K2,
  FILE* file
){
  read_vec_bin(g, K1, K2, file);
  return 0;
}