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131 lines
3.9 KiB
C
131 lines
3.9 KiB
C
#include <stdlib.h>
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#include <math.h>
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#include <stdio.h>
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#ifdef PARALLEL
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#include <mpi.h>
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#endif
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#include "header.h"
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/***********************************************************************
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* This is the main function for controlling the activities of the code.
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* If you ask for any sort of minimization or MCMC analysis, the code is
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* redirected to another routine, but once finished will complete the rest
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* of the tasks checked off (so if you want to minimize and then print out
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* related statistics, the code will do that automatically if you ask it).
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*
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*
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* Each task generates an output file using the "root_filename" in the hod.bat
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* file and tacking on an extension at the end:
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*
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* [filename].r_space --> real space correlation function
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* [filename].HOD --> prints out the mean N(M)
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*
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* See the full list below.
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*/
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void tasks(int argc, char **argv)
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{
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int i,j,nsize,ix,iy,nr,i1,i2,n;
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float x1,x2,x3,x4,x5,x6,err,npairs;
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double r,rs,rp,dx1,dx2,dx3,dx4,dx5,**xi2d,*xx2d,*yy2d,**xi2d_data,**xi2d_kaiser,
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xi0_m,xi2_m,xi0_k,xi2_k,xi0_d,xi2_d,xi_r,rlo,rhi,rr[50],rhalf[50],dr,
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rphi,rshi,rslo,rplo,dlogm,m,sig;
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FILE *fp,*fp2,*fp1;
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char fname[100];
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/* This is for Monte-Carlo Markov Chain exploration of the posterior
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* distribution of the parameters, either real-space or redshift-space,
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* depending on what MCMC is set to.
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*/
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/* This is to output the shape of the mean occupation function and the
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* scatter about the mean.
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* File columns are:
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* 1 - halo mass (M_sol/h)
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* 2 - N_cen(M)
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* 3 - N_sat(M)
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* 4 - N_tot(M)
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* 5 - <N(N-1)>
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* 6 - ratio of scatter to Poisson scatter (often called "alpha")
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*/
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if(Task.HOD || Task.All)
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{
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sprintf(fname,"%s.HOD",Task.root_filename);
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fp=fopen(fname,"w");
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dlogm=(log(HOD.M_max)-log(HOD.M_low))/99;
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for(i=1;i<=100;++i)
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{
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m=exp((i-1)*dlogm)*HOD.M_low;
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sig = N_sat(m)*N_sat(m) + N_cen(m)*(1-N_cen(m));
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fprintf(fp,"%e %e %e %e %e %e\n",
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m,N_cen(m),N_sat(m),N_avg(m),sig,sig/(N_avg(m)*N_avg(m)));
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}
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fclose(fp);
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}
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/* This sets in motion the calculation and tabulation of the real-space
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* correlation function and outputs it to a file.
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* File columns are:
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* 1 - radius (Mpc/h)
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* 2 - one-halo term (real-space)
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* 3 - two-halo term (real-space)
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* 4 - full xi(r)
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* 5 - projected correlation function (1st column is now r_p)
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* 6 - projected correlation function without z-space correction
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*/
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/* This takes a halofile from a simulation and populates the halos
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* with galaxies according the HOD specified in the batch file.
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*/
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if(Task.populate_sim==1)
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populate_simulation();
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if(!ThisTask)
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OUTPUT=1;
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/* Output the linear and non-linear dark matter power spectrum.
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* Non-linear P(k) calculated using Smith et al.
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*
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* Format of file [root].matter_pk
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* 1 - k [h/Mpc]
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* 2 - linear P(k) [Mpc/h]^3
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* 3 - non-linear P(k) [Mpc/h]^3
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*/
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/* Output the linear and non-linear dark matter power spectrum.
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* Non-linear xi(r) is Fourier transform of Smith et al (above)
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*
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* Format of file [root].matter_pk
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* 1 - r [Mpc/h]
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* 2 - linear xi(r)
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* 3 - non-linear xi(r)
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*/
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/* Output the matter variance as a function of scale.
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*
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* Format of file [root].sigma_r
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* 1 - r [Mpc/h]
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* 2 - sigma(r) [linear]
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* 3 - sigma(r) [non-linear, using Smith]
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* 4 - mass [M_sol/h] mass = (4/3)*PI*r^3*rho_bar
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*/
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/* Output the halo concentrations using Bullock et al (2001) model
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*
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* Format of file [root].civr
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* 1 - mass [Msol/h] --> mass specified by DELTA_HALO (input file).
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* 2 - halo concentration. (for the specified halo definition)
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*/
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/* Output the halo mass function using the results of Tinker et al (2008)
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*
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* Format of the file [root].massfunc
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* 1 - mass [Msol/h]
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* 2 - dn/dM [Mph/c]^-3 (the differential mass function).
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*/
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endrun("finished with tasks");
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}
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