Nsryjdtyk

I have a limited knowledge about c++. I tried to compile a c++ library and when I run the make file for the following header file

mcmc_dhs.h

#include <algorithm>

#include <map>



// intrinsic shape and (reduced) shear just add?

//#define WLNOISE



// use shear instead of reduced shear for model

//#define NOREDSHEAR



/// parameters for the M200-concentration relation

const number mcreal[2] = {9.59,-0.102}; // Dolag et al. (2004)

//const number mcreal[2] = {5.26,-0.100}; // Neto et al. (2007) [Millenium Run]



/// critical density at z=0 (h100=1) in [Msun/Mpc^3]

const number rhocrit = exp(log(rhoCrit)+3.*log(Mpc)-log(Msun)); 



/// two extra halo parameters: r200 (and concentration: 2)

#define PARAMS 1



/// define region (square; twice value here) about halo that considers sources for model

#define REGION 10.0*arcmin



class mcmc_dhs : public mcmc

{

 public:



  mcmc_dhs() : 

  data(), cosmohandler(0.3,0.7,0.21,0.8,0.04),

    lenseff(), intrvar()

    {

      boundaries = 

    {{0,512},{0,512},{0.01,5.},{100.,3000.},{0.1,50}};

    }

  ~mcmc_dhs() {}



  /// size of grid for looking up sources

  static const int Ngrid = 200;

It returns the following error message:

mcmc_dhs.h:55:67: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11 [enabled by default]

      boundaries = {{0,512},{0,512},{0.01,5.},{100.,3000.},{0.1,50}};

                                                                   ^

mcmc_dhs.h:55:17: error: assigning to an array from an initializer list

      boundaries = {{0,512},{0,512},{0.01,5.},{100.,3000.},{0.1,50}};

                 ^

In file included from ../modules/matrix.h:15:0,

                 from ../modules/probdensity.h:4,

                 from ../modules/mcmc.h:4,

                 from mcmc_dhs.h:4,

I would appreciate if someone can help.

You cannot assign directly to an array after its declaration. Basically your code is the same as

int main()

{

    double arr[2][2];

    arr = { {1, 2}, {3, 4.5} }; // error

}

You have to either assign the value at declaration

double arr[2][2] = { {1, 2}, {3, 4.5} };

or use a loop (or std::copy) to assign elements. Since your array seems to be a member variable, you can also initialize it in the constructor initialization list:

 mcmc_dhs() : data(), cosmohandler(0.3,0.7,0.21,0.8,0.04), 

              lenseff(), intrvar(), 

              boundaries{{0,512},{0,512},{0.01,5.},{100.,3000.},{0.1,50}}

 { 

    // rest of ctor implementation

 }