valarray_bool_const.pass.cpp 1.6 KB

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  1. //===----------------------------------------------------------------------===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. // <valarray>
  9. // template<class T> class valarray;
  10. // valarray operator[](const valarray<bool>& vb) const;
  11. #include <valarray>
  12. #include <cassert>
  13. int main(int, char**)
  14. {
  15. {
  16. int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
  17. const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
  18. bool b[N1] = {true, false, false, true, true, false,
  19. false, true, false, false, false, true};
  20. std::valarray<int> v1(a1, N1);
  21. std::valarray<bool> vb(b, N1);
  22. std::valarray<int> v2(v1[vb]);
  23. assert(v2.size() == 5);
  24. assert(v2[ 0] == 0);
  25. assert(v2[ 1] == 3);
  26. assert(v2[ 2] == 4);
  27. assert(v2[ 3] == 7);
  28. assert(v2[ 4] == 11);
  29. }
  30. {
  31. int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
  32. const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
  33. bool b[N1] = {true, false, false, true, true, false,
  34. false, true, false, false, false, true};
  35. std::valarray<int> v1(a1, N1);
  36. std::valarray<bool> vb(b, N1);
  37. std::valarray<int> v2((v1 - 1)[vb]);
  38. assert(v2.size() == 5);
  39. assert(v2[ 0] == -1);
  40. assert(v2[ 1] == 2);
  41. assert(v2[ 2] == 3);
  42. assert(v2[ 3] == 6);
  43. assert(v2[ 4] == 10);
  44. }
  45. return 0;
  46. }