trapping/frfme.cpp and trapping/lffft.cpp were renamed

/*! \file frfme.cpp

 */

#include <complex>

#include <cstdio>

#include <fstream>

#include <regex>

#include <string>

#ifndef INCLUDE_PARSERS_H_

#include "../include/Parsers.h"

#endif

#ifndef INCLUDE_COMMONS_H_

#include "../include/Commons.h"

#endif

#ifndef INCLUDE_SPH_SUBS_H_

#include "../include/sph_subs.h"

#endif

#ifndef INCLUDE_TRA_SUBS_H_

#include "../include/tra_subs.h"

#endif

using namespace std;

/*! \brief C++ implementation of FRFME

 *

 *  \param data_file: `string` Name of the input data file.

 *  \param output_path: `string` Directory to write the output files in.

 */

void frfme(string data_file, string output_path) {

  string tfrfme_name = output_path + "/c_TFRFME";

  fstream tfrfme;

  char namef[7];

  char more;

  double *xv = NULL, *yv = NULL, *zv = NULL;

  double *vkv = NULL, **vkzm = NULL;

  complex<double> *wk = NULL, **w = NULL, **wsum = NULL;

  const complex<double> cc0(0.0, 0.0);

  const complex<double> uim(0.0, 1.0);

  int line_count = 0, last_read_line = 0;

  regex re = regex("-?[0-9]+");

  string *file_lines = load_file(data_file, &line_count);

  smatch m;

  string str_target = file_lines[last_read_line++];

  regex_search(str_target, m, re);

  int jlmf = stoi(m.str());

  str_target = m.suffix().str();

  regex_search(str_target, m, re);

  int jlml = stoi(m.str());

  int lmode, lm, nks, nkv;

  double vk, exri, an, ff, tra;

  double exdc, wp, xip, xi;

  int idfc, nxi;

  double apfafa, pmf, spd, rir, ftcn, fshmx;

  double vxyzmx, delxyz, vknmx, delk, delks;

  double frsh, exril;

  int nlmmt, nrvc;

  // Vector size variables

  int vkzm_size, wsum_size;

  // End of vector size variables

  if (jlmf != 1) {

    int nxv, nyv, nzv;

    tfrfme.open(tfrfme_name, ios::in | ios::binary);

    if (tfrfme.is_open()) {

      tfrfme.read(reinterpret_cast<char *>(&lmode), sizeof(int));

      tfrfme.read(reinterpret_cast<char *>(&lm), sizeof(int));

      tfrfme.read(reinterpret_cast<char *>(&nkv), sizeof(int));

      tfrfme.read(reinterpret_cast<char *>(&nxv), sizeof(int));

      tfrfme.read(reinterpret_cast<char *>(&nyv), sizeof(int));

      tfrfme.read(reinterpret_cast<char *>(&nzv), sizeof(int));

      tfrfme.read(reinterpret_cast<char *>(&vk),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&exri),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&an),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&ff),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&tra),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&spd),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&frsh),  sizeof(double));

      tfrfme.read(reinterpret_cast<char *>(&exril),  sizeof(double));

      xv = new double[nxv]();

      yv = new double[nyv]();

      zv = new double[nzv]();

      for (int xi = 0; xi < nxv; xi++) tfrfme.read(reinterpret_cast<char *>(&(xv[xi])), sizeof(double));

      for (int yi = 0; yi < nxv; yi++) tfrfme.read(reinterpret_cast<char *>(&(yv[yi])), sizeof(double));

      for (int zi = 0; zi < nxv; zi++) tfrfme.read(reinterpret_cast<char *>(&(zv[zi])), sizeof(double));

      fstream temptape2;

      string tempname2 = output_path + "c_TEMPTAPE2";

      temptape2.open(tempname2.c_str(), ios::in | ios::binary);

      if (temptape2.is_open()) {

	//vkv = new double[nkv]();

	for (int jx = 0; jx < nkv; jx++) temptape2.read(reinterpret_cast<char *>(&(vkv[jx])), sizeof(double));

	vkzm = new double*[nkv];

	vkzm_size = nkv;

	for (int vki = 0; vki < nkv; vki++) vkzm[vki] = new double[nkv]();

	for (int jy10 = 0; jy10 < nkv; jy10++) {

	  for (int jx10 = 0; jx10 < nkv; jx10++) {

	    temptape2.read(reinterpret_cast<char *>(&(vkzm[jx10][jy10])), sizeof(double));

	  } //jx10 loop

	} // jy10 loop

	temptape2.read(reinterpret_cast<char *>(&apfafa), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&pmf), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&spd), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&rir), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&ftcn), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&fshmx), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&vxyzmx), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&delxyz), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&vknmx), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&delk), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&delks), sizeof(double));

	temptape2.read(reinterpret_cast<char *>(&nlmmt), sizeof(int));

	temptape2.read(reinterpret_cast<char *>(&nrvc), sizeof(int));

	temptape2.close();

      } else {

	printf("ERROR: could not open TEMPTAPE2 file.\n");

      }

      for (int ixyz12 = 0; ixyz12 < nrvc; ixyz12++) {

	for (int j12 = 0; j12 < jlmf - 1; j12++) {

	  double vreal, vimag;

	  tfrfme.read(reinterpret_cast<char *>(&vreal), sizeof(double));

	  tfrfme.read(reinterpret_cast<char *>(&vimag), sizeof(double));

	  wsum[j12][ixyz12] = complex<double>(vreal, vimag);

	} // j12 loop

      } // ixyz12 loop

      tfrfme.close();

    } else {

      printf("ERROR: could not open TFRFME file.\n");

    }

    nks = nkv - 1;

  } else { // label 16

    int nksh, nrsh, nxsh, nysh, nzsh;

    str_target = file_lines[last_read_line++];

    for (int cli = 0; cli < 7; cli++) {

      regex_search(str_target, m, re);

      if (cli == 0) lmode = stoi(m.str());

      else if (cli == 1) lm = stoi(m.str());

      else if (cli == 2) nksh = stoi(m.str());

      else if (cli == 3) nrsh = stoi(m.str());

      else if (cli == 4) nxsh = stoi(m.str());

      else if (cli == 5) nysh = stoi(m.str());

      else if (cli == 6) nzsh = stoi(m.str());

      str_target = m.suffix().str();

    }

    re = regex("-?[0-9]\\.[0-9]+([dDeE][-+]?[0-9]+)?");

    regex_search(str_target, m, re);

    double wlenfr = stod(m.str());

    str_target = file_lines[last_read_line++];

    for (int cli = 0; cli < 3; cli++) {

      regex_search(str_target, m, re);

      if (cli == 0) an = stod(m.str());

      else if (cli == 1) ff = stod(m.str());

      else if (cli == 2) tra = stod(m.str());

      str_target = m.suffix().str();

    }

    double spdfr, exdcl;

    str_target = file_lines[last_read_line++];

    for (int cli = 0; cli < 3; cli++) {

      regex_search(str_target, m, re);

      if (cli == 0) spd = stod(m.str());

      else if (cli == 1) spdfr = stod(m.str());

      else if (cli == 2) exdcl = stod(m.str());

      str_target = m.suffix().str();

    }

    str_target = file_lines[last_read_line++];

    re = regex("[eEmM]");

    if (regex_search(str_target, m, re)) {

      more = m.str().at(0);

      if (more == 'm' || more == 'M') {

	more = 'M';

	sprintf(namef, "c_TMDF");

      }

      else if (more == 'e' || more == 'E') {

	more = 'E';

	sprintf(namef, "c_TEDF");

      }

      str_target = m.suffix().str();

      re = regex("[0-9]+");

      regex_search(str_target, m, re);

      int ixi = stoi(m.str());

      fstream tedf;

      string tedf_name = output_path + "/" + namef;

      tedf.open(tedf_name.c_str(), ios::in | ios::binary);

      if (tedf.is_open()) {

	int iduml, idum;

	tedf.read(reinterpret_cast<char *>(&iduml), sizeof(int));

	for (int i = 0; i < iduml; i++) tedf.read(reinterpret_cast<char *>(&idum), sizeof(int));

	tedf.read(reinterpret_cast<char *>(&exdc), sizeof(double));

	tedf.read(reinterpret_cast<char *>(&wp), sizeof(double));

	tedf.read(reinterpret_cast<char *>(&xip), sizeof(double));

	tedf.read(reinterpret_cast<char *>(&idfc), sizeof(int));

	tedf.read(reinterpret_cast<char *>(&nxi), sizeof(int));

	if (idfc >= 0) {

	  if (ixi <= nxi) {

	    for (int i = 0; i < ixi; i++) tedf.read(reinterpret_cast<char *>(&xi), sizeof(double));

	  } else { // label 96

	    tedf.close();

	    // label 98

	    string output_name = output_path + "/c_OFRFME";

	    FILE *output = fopen(output_name.c_str(), "w");

	    fprintf(output, "  WRONG INPUT TAPE\n");

	    fclose(output);

	  }

	} else { // label 18

	  xi = xip;

	}

	// label 20

	tedf.close();

	double wn = wp / 3.0e8;

	vk = xi * wn;

	exri = sqrt(exdc);

	frsh = 0.0;

	exril = 0.0;

	fshmx = 0.0;

	apfafa = exri / (an * ff);

	if (lmode != 0) pmf = 2.0 * apfafa;

	if (spd > 0.0) {

	  exril = sqrt(exdcl);

	  rir = exri / exril;

	  ftcn = 2.0 / (1.0 + rir);

	  frsh = -spd * spdfr;

	  double sthmx = an / exri;

	  double sthlmx = sthmx * rir;

	  double uy = 1.0;

	  fshmx = spd * (rir * (sqrt(uy - sthmx * sthmx) / sqrt(uy - sthlmx * sthlmx)) - uy);

	}

	// label 22

	nlmmt = lm * (lm + 2) * 2;

	nks = nksh * 2;

	nkv = nks + 1;

	double vkm = vk * exri;

	vknmx = vk * an;

	delk = vknmx / nksh;

	delks = delk / vkm;

	delks = delks * delks;

	vxyzmx = acos(0.0) * 4.0 / vkm * wlenfr;

	delxyz = vxyzmx / nrsh;

	int nxs = nxsh * 2;

	int nxv = nxs + 1;

	int nxshpo = nxsh + 1;

	xv = new double[nxv]();

	//xv[nxsh] = 0.0;

	for (int i24 = nxshpo; i24 <= nxs; i24++) {

	  xv[i24] = xv[i24 - 1] + delxyz;

	  xv[nxv - i24 - 1] = -xv[i24];

	} // i24 loop

	int nys = nysh * 2;

	int nyv = nys + 1;

	int nyshpo = nysh + 1;

	yv = new double[nyv]();

	//yv[nysh] = 0.0;

	for (int i25 = nyshpo; i25 <= nys; i25++) {

	  yv[i25] = yv[i25 - 1] + delxyz;

	  yv[nyv - i25 - 1] = -yv[i25];

	} // i25 loop

	int nzs = nzsh * 2;

	int nzv = nzs + 1;

	int nzshpo = nzsh + 1;

	zv = new double[nzv]();

	//zv[nysh] = 0.0;

	for (int i27 = nzshpo; i27 <= nzs; i27++) {

	  zv[i27] = zv[i27 - 1] + delxyz;

	  zv[nzv - i27 - 1] = -zv[i27];

	} // i27 loop

	int nrvc = nxv * nyv * nzv;

	int nkshpo = nksh + 1;

	wsum = new complex<double>*[nlmmt];

	wsum_size = nlmmt;

	for (int wsi = 0; wsi < nlmmt; wsi++) wsum[wsi] = new complex<double>[nrvc]();

	vkv = new double[nkv]();

	// vkv[nksh] = 0.0;

	for (int i28 = nkshpo; i28 <= nks; i28++) {

	  vkv[i28] = vkv[i28 - 1] + delk;

	  vkv[nkv - i28 - 1] = -vkv[i28];

	} // i28 loop

	tfrfme.open(tfrfme_name.c_str(), ios::out | ios::binary);

	if (tfrfme.is_open()) {

	  tfrfme.write(reinterpret_cast<char *>(&lmode), sizeof(int));

	  tfrfme.write(reinterpret_cast<char *>(&lm), sizeof(int));

	  tfrfme.write(reinterpret_cast<char *>(&nkv), sizeof(int));

	  tfrfme.write(reinterpret_cast<char *>(&nxv), sizeof(int));

	  tfrfme.write(reinterpret_cast<char *>(&nyv), sizeof(int));

	  tfrfme.write(reinterpret_cast<char *>(&nxv), sizeof(int));

	  tfrfme.write(reinterpret_cast<char *>(&vk), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&exri), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&an), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&ff), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&tra), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&spd), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&frsh), sizeof(double));

	  tfrfme.write(reinterpret_cast<char *>(&exril), sizeof(double));

	  for (int xi = 0; xi < nxv; xi++)

	    tfrfme.write(reinterpret_cast<char *>(&(xv[xi])), sizeof(double));

	  for (int yi = 0; yi < nyv; yi++)

	    tfrfme.write(reinterpret_cast<char *>(&(yv[yi])), sizeof(double));

	  for (int zi = 0; zi < nzv; zi++)

	    tfrfme.write(reinterpret_cast<char *>(&(zv[zi])), sizeof(double));

	  fstream temptape1, temptape2;

	  string temp_name1 = output_path + "/c_TEMPTAPE1";

	  string temp_name2 = output_path + "/c_TEMPTAPE2";

	  temptape1.open(temp_name1.c_str(), ios::out | ios::binary);

	  temptape2.open(temp_name2.c_str(), ios::out | ios::binary);

	  for (int jx = 0; jx < nkv; jx++)

	    temptape2.write(reinterpret_cast<char *>(&(vkv[jx])), sizeof(double));

	  frfmer(nkv, vkm, vkv, vknmx, apfafa, tra, spd, rir, ftcn, lm, lmode, pmf, temptape1, temptape2);

	  temptape1.close();

	  temptape2.write(reinterpret_cast<char *>(&apfafa), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&pmf), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&spd), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&rir), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&ftcn), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&fshmx), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&vxyzmx), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&delxyz), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&vknmx), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&delk), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&delks), sizeof(double));

	  temptape2.write(reinterpret_cast<char *>(&nlmmt), sizeof(int));

	  temptape2.write(reinterpret_cast<char *>(&nrvc), sizeof(int));

	  temptape2.close();

	  temptape2.open("c_TEMPTAPE2", ios::in | ios::binary);

	  vkv = new double[nkv]();

	  for (int jx = 0; jx < nkv; jx++)

	    temptape2.read(reinterpret_cast<char *>(&(vkv[jx])), sizeof(double));

	  vkzm = new double*[nkv];

	  vkzm_size = nkv;

	  for (int vki = 0; vki < nkv; vki++) vkzm[vki] = new double[nkv]();

	  for (int jy40 = 0; jy40 < nkv; jy40++) {

	    for (int jx40 = 0; jx40 < nkv; jx40++)

	      temptape2.read(reinterpret_cast<char *>(&(vkzm[jx40][jy40])), sizeof(double));

	  } // jy40 loop

	  temptape2.close();

	  wk = new complex<double>[nlmmt];

	  w = new complex<double>*[nkv];

	  for (int wi = 0; wi < nkv; wi++) w[wi] = new complex<double>[nkv]();

	  for (int j80 = jlmf - 1; j80 < jlml; j80++) {

	    temptape1.open(temp_name1.c_str(), ios::in | ios::binary);

	    for (int jy50 = 0; jy50 < nkv; jy50++) {

	      for (int jx50 = 0; jx50 < nkv; jx50++) {

		for (int i = 0; i < nlmmt; i++) {

		  double vreal, vimag;

		  temptape1.read(reinterpret_cast<char *>(&vreal), sizeof(double));

		  temptape1.read(reinterpret_cast<char *>(&vimag), sizeof(double));

		  wk[i] = complex<double>(vreal, vimag);

		}

		w[jx50][jy50] = wk[j80];

	      } // jx50

	    } // jy50 loop

	    temptape1.close();

	    int ixyz = 0;

	    for (int iz75 = 0; iz75 < nzv; iz75++) {

	      double z = zv[iz75]  + frsh;

	      for (int iy70 = 0; iy70 < nyv; iy70++) {

		double y = yv[iy70];

		for (int ix65 = 0; ix65 < nxv; ix65++) {

		  double x = xv[ix65];

		  ixyz++;

		  complex<double> sumy = cc0;

		  for (int jy60 = 0; jy60 < nkv; jy60++) {

		    double vky = vkv[jy60];

		    double vkx = vkv[nkv - 1];

		    double vkzf = vkzm[0][jy60];

		    complex<double> phasf = exp(uim * (-vkx * x + vky * y +vkzf * z));

		    double vkzl = vkzm[nkv - 1][jy60];

		    complex<double> phasl = exp(uim * (vkx * x + vky * y + vkzl * z));

		    complex<double> sumx = 0.5 * (w[0][jy60] * phasf + w[nkv - 1][jy60] * phasl);

		    for (int jx55 = 1; jx55 < nks; jx55++) {

		      vkx = vkv[jx55];

		      double vkz = vkzm[jx55][jy60];

		      complex<double> phas = exp(uim * (vkx * x + vky * y + vkz * z));

		      sumx += (w[jx55][jy60] * phas);

		    } // jx55 loop

		    if (jy60 == 0 || jy60 == nkv - 1) sumx *= 0.5;

		    sumy += sumx;

		  } // jy60 loop

		  wsum[j80][ixyz - 1] = sumy * delks;

		} // ix65 loop

	      } // iy70 loop

	    } // iz75 loop

	  } // j80 loop

	  if (jlmf != 1) {

	    tfrfme.open(tfrfme_name, ios::in | ios::out | ios::binary);

	    tfrfme.read(reinterpret_cast<char *>(&lmode), sizeof(int));

	    tfrfme.read(reinterpret_cast<char *>(&lm), sizeof(int));

	    tfrfme.read(reinterpret_cast<char *>(&nkv), sizeof(int));

	    tfrfme.read(reinterpret_cast<char *>(&nxv), sizeof(int));

	    tfrfme.read(reinterpret_cast<char *>(&nyv), sizeof(int));

	    tfrfme.read(reinterpret_cast<char *>(&nzv), sizeof(int));

	    tfrfme.read(reinterpret_cast<char *>(&vk), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&exri), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&an), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&ff), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&tra), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&spd), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&frsh), sizeof(double));

	    tfrfme.read(reinterpret_cast<char *>(&exril), sizeof(double));

	    for (int i = 0; i < nxv; i++) tfrfme.read(reinterpret_cast<char *>(&(xv[i])), sizeof(double));

	    for (int i = 0; i < nyv; i++) tfrfme.read(reinterpret_cast<char *>(&(yv[i])), sizeof(double));

	    for (int i = 0; i < nzv; i++) tfrfme.read(reinterpret_cast<char *>(&(zv[i])), sizeof(double));

	  }

	  // label 88

	  for (int ixyz = 0; ixyz < nrvc; ixyz++) {

	    for (int j = 0; j< jlml; j++) {

	      double vreal = wsum[j][ixyz].real();

	      double vimag = wsum[j][ixyz].imag();

	      tfrfme.write(reinterpret_cast<char *>(&vreal), sizeof(double));

	      tfrfme.write(reinterpret_cast<char *>(&vimag), sizeof(double));

	    } // j loop

	  } // ixyz loop

	  tfrfme.close();

	  string output_name = output_path + "/c_OFRFME";

	  FILE *output = fopen(output_name.c_str(), "w");

	  fprintf(output, " IF JLML < NLMMT, PRESERVE TEMPTAPE1, TEMPTAPE2, AND TFRFRME,\n");

	  fprintf(output, " AND RESTART LM RUN WITH JLMF = JLML+1\n");

	  if (spd > 0.0) fprintf(output, "  FSHMX =%15.7lE\n", fshmx);

	  fprintf(output, "  FRSH =%15.7lE\n", frsh);

	  fclose(output);

	} else { // Should never happen.

	  printf("ERROR: could not open TFRFME file for output.\n");

	}

      } else {

	printf("ERROR: could not open TEDF file.\n");

      }

    } else { // label 98

      string output_name = output_path + "/c_OFRFME";

      FILE *output = fopen(output_name.c_str(), "w");

      fprintf(output, "  WRONG INPUT TAPE\n");

      fclose(output);

    }

  }

  // label 45

  if (tfrfme.is_open()) tfrfme.close();

  delete[] file_lines;

  if (xv != NULL) delete[] xv;

  if (yv != NULL) delete[] yv;

  if (zv != NULL) delete[] zv;

  if (vkv != NULL) delete[] vkv;

  if (vkzm != NULL) {

    for (int vki = vkzm_size - 1; vki > -1; vki--) delete[] vkzm[vki];

    delete[] vkzm;

  }

  if (wsum != NULL) {

    for (int wsi = wsum_size - 1; wsi > -1; wsi--) delete[] wsum[wsi];

    delete[] wsum;

  }

  if (wk != NULL) delete[] wk;

  if (w != NULL) {

    for (int wi = nkv - 1; wi > -1; wi--) delete[] w[wi];

    delete[] w;

  }

  printf("Done.\n");

}