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  1. #include <iostream>
  2.  
  3. template <int I1, int I2>
  4. class adder { };
  5.  
  6. template <int I1, int I2>
  7. class adder1 : public adder<I1, I2> { };
  8.  
  9. template <int I1, int I2>
  10. class adder2 : public adder<I1, I2> { };
  11.  
  12. template <typename A, int I>
  13. class fusedmultiplyadder { };
  14.  
  15. template <int i1, int i2>
  16. int adderI1(adder<i1, i2>) { return i1; }
  17. template <int i1, int i2>
  18. int adderI2(adder<i1, i2>) { return i2; }
  19.  
  20. template <typename A, int i3>
  21. void foo(fusedmultiplyadder<A, i3>)
  22. {
  23.    std::cout << "fma: " << adderI1(A()) << ", " << adderI2(A()) << ", " << i3 << std::endl;
  24. }
  25.  
  26. int main()
  27. {
  28.    fusedmultiplyadder<adder1<2, 3>, 4> fma1;
  29.    foo(fma1);
  30.    fusedmultiplyadder<adder2<2, 3>, 4> fma2;
  31.    foo(fma2);
  32.    return 0;
  33. }
Success #stdin #stdout 0s 2884KB
comments (?)
stdin 
Standard input is empty
stdout 
fma: 2, 3, 4
fma: 2, 3, 4
https://ideone.com/K0k2b
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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