| // -*- C++ -*- |
| //===------------------------------ span ---------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===---------------------------------------------------------------------===// |
| // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 |
| |
| // <span> |
| |
| // template<class T, ptrdiff_t X, class U, ptrdiff_t Y> |
| // constexpr bool operator<(span<T, X> l, span<U, Y> r); |
| // |
| // |
| // Effects: Equivalent to: |
| // return lexicographical_compare(l.begin(), l.end(), r.begin(), r.end()); |
| // |
| |
| #include <span> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| struct A{}; |
| bool operator==(A, A) {return true;} |
| |
| constexpr int iArr1[] = { 0, 1, 2, 1, 2, 5, 6, 7, 8, 9}; |
| int iArr2[] = { 0, 1, 2, 1, 2, 5, 6, 7, 8, 9}; |
| constexpr float fArr1[] = {0., 1., 2., 1., 2., 5., 6., 7., 8., 9.}; |
| float fArr2[] = {0., 1., 2., 1., 2., 5., 6., 7., 8., 9.}; |
| |
| |
| int main () { |
| |
| constexpr std::span<const int> csp0d{}; |
| constexpr std::span<const int> csp1d{iArr1, 10}; |
| constexpr std::span<const int> csp2d{iArr1 + 3, 2}; |
| constexpr std::span<const int> csp3d{iArr1 + 1, 2}; |
| constexpr std::span<const int> csp4d{iArr1 + 6, 2}; |
| |
| constexpr std::span<const int, 0> csp0s{}; |
| constexpr std::span<const int, 10> csp1s{iArr1, 10}; |
| constexpr std::span<const int, 2> csp2s{iArr1 + 3, 2}; |
| constexpr std::span<const int, 2> csp3s{iArr1 + 1, 2}; |
| constexpr std::span<const int, 2> csp4s{iArr1 + 6, 2}; |
| |
| static_assert(!(csp0d < csp0d), ""); |
| static_assert(!(csp0s < csp0s), ""); |
| static_assert(!(csp0s < csp0d), ""); |
| static_assert(!(csp0d < csp0s), ""); |
| |
| static_assert( (csp0d < csp1d), ""); |
| static_assert( (csp0s < csp1s), ""); |
| static_assert( (csp0s < csp1d), ""); |
| static_assert( (csp0d < csp1s), ""); |
| |
| static_assert(!(csp1d < csp1s), ""); |
| static_assert(!(csp1s < csp1d), ""); |
| |
| static_assert(!(csp2d < csp3d), ""); |
| static_assert(!(csp2s < csp3s), ""); |
| static_assert(!(csp2d < csp3s), ""); |
| static_assert(!(csp2s < csp3d), ""); |
| |
| static_assert( (csp2d < csp4d), ""); |
| static_assert( (csp2s < csp4s), ""); |
| static_assert( (csp2d < csp4s), ""); |
| static_assert( (csp2s < csp4d), ""); |
| |
| static_assert(!(csp4d < csp2d), ""); |
| static_assert(!(csp4s < csp2s), ""); |
| static_assert(!(csp4d < csp2s), ""); |
| static_assert(!(csp4s < csp2d), ""); |
| |
| std::span<int> sp0d{}; |
| std::span<int> sp1d{iArr2, 10}; |
| std::span<int> sp2d{iArr2 + 3, 2}; |
| std::span<int> sp3d{iArr2 + 1, 2}; |
| std::span<int> sp4d{iArr2 + 6, 2}; |
| |
| std::span<int, 0> sp0s{}; |
| std::span<int, 10> sp1s{iArr2, 10}; |
| std::span<int, 2> sp2s{iArr2 + 3, 2}; |
| std::span<int, 2> sp3s{iArr2 + 1, 2}; |
| std::span<int, 2> sp4s{iArr2 + 6, 2}; |
| |
| assert(!(sp0d < sp0d)); |
| assert(!(sp0s < sp0s)); |
| assert(!(sp0s < sp0d)); |
| assert(!(sp0d < sp0s)); |
| |
| assert( (sp0d < sp1d)); |
| assert( (sp0s < sp1s)); |
| assert( (sp0s < sp1d)); |
| assert( (sp0d < sp1s)); |
| |
| assert(!(sp1d < sp1s)); |
| assert(!(sp1s < sp1d)); |
| |
| assert(!(sp2d < sp3d)); |
| assert(!(sp2s < sp3s)); |
| assert(!(sp2d < sp3s)); |
| assert(!(sp2s < sp3d)); |
| |
| assert( (sp2d < sp4d)); |
| assert( (sp2s < sp4s)); |
| assert( (sp2d < sp4s)); |
| assert( (sp2s < sp4d)); |
| |
| assert(!(sp4d < sp2d)); |
| assert(!(sp4s < sp2s)); |
| assert(!(sp4d < sp2s)); |
| assert(!(sp4s < sp2d)); |
| |
| // cross type comparisons |
| assert(!(csp0d < sp0d)); |
| assert(!(csp0s < sp0s)); |
| assert(!(csp0s < sp0d)); |
| assert(!(csp0d < sp0s)); |
| |
| assert( (csp0d < sp1d)); |
| assert( (csp0s < sp1s)); |
| assert( (csp0s < sp1d)); |
| assert( (csp0d < sp1s)); |
| |
| assert(!(csp1d < sp1s)); |
| assert(!(csp1s < sp1d)); |
| |
| assert(!(csp2d < sp3d)); |
| assert(!(csp2s < sp3s)); |
| assert(!(csp2d < sp3s)); |
| assert(!(csp2s < sp3d)); |
| |
| assert( (csp2d < sp4d)); |
| assert( (csp2s < sp4s)); |
| assert( (csp2d < sp4s)); |
| assert( (csp2s < sp4d)); |
| |
| assert(!(csp4d < sp2d)); |
| assert(!(csp4s < sp2s)); |
| assert(!(csp4d < sp2s)); |
| assert(!(csp4s < sp2d)); |
| |
| // More cross-type comparisons (int vs float) |
| static_assert(std::span<const float>{fArr1, 8} < std::span<const int>{iArr1, 9}, ""); |
| static_assert(std::span<const int>{iArr1, 8} < std::span<const float>{fArr1, 9}, ""); |
| assert(!(std::span<float>{fArr2} < std::span<int>{iArr2})); |
| assert(!(std::span<int>{iArr2} < std::span<float>{fArr2})); |
| |
| static_assert(!(std::span<const int>{iArr1, 9} < std::span<const float>{fArr1, 8}), ""); |
| } |