Fortran minimization of a function with additional arguments

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You don’t need anonymous functions for this. Your Matlab example is also not anonymous in the end, it has a name g.

Fortran internal functions are of great use here (Fortran 2008 feature, but supported in gfortran and ifort, not supported in Solaris Studio):

call minimum(g, x0, xopt)

contains

  real function g(x)
    real, intent(in) :: x
    g = f(x,data)
  end function

end

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