text: #define GLM_ENABLE_EXPERIMENTAL
  #include <glm/glm.hpp>
  #include <glm/gtc/epsilon.hpp>
  
  #if GLM_HAS_RANGE_FOR
  
  #include <glm/gtx/range.hpp>
  
  int test_vec()
  {
  	int Error = 0;
  
  	{
  		glm::ivec3 const v(1, 2, 3);
  
  		int count = 0;
  		glm::ivec3 Result(0);
  		for(int x : v)
  		{
  			Result[count] = x;
  			count++;
  		}
  		Error += count == 3 ? 0 : 1;
  		Error += v == Result ? 0 : 1;
  	}
  
  	{
  		glm::ivec3 v(1, 2, 3);
  		for(int& x : v)
  			x = 0;
  		Error += glm::all(glm::equal(v, glm::ivec3(0))) ? 0 : 1;
  	}
  
  	return Error;
  }
  
  int test_mat()
  {
  	int Error = 0;
  
  	{
  		glm::mat4x3 m(1.0f);
  
  		int count = 0;
  		float Sum = 0.0f;
  		for(float x : m)
  		{
  			count++;
  			Sum += x;
  		}
  		Error += count == 12 ? 0 : 1;
  		Error += glm::epsilonEqual(Sum, 3.0f, 0.001f) ? 0 : 1;
  	}
  
  	{
  		glm::mat4x3 m(1.0f);
  
  		for (float& x : m) { x = 0; }
  		glm::vec4 v(1, 1, 1, 1);
  		Error += glm::all(glm::equal(m*v, glm::vec3(0, 0, 0))) ? 0 : 1;
  	}
  
  	return Error;
  }
  
  int main()
  {
  	int Error = 0;
  	Error += test_vec();
  	Error += test_mat();
  	return Error;
  }
  
  #else
  
  int main()
  {
  	return 0;
  }
  
  #endif//GLM_HAS_RANGE_FOR
  