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
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
10
11 // The following platforms have sizeof(long double) == sizeof(double), so this test doesn't apply to them.
12 // This test does apply to aarch64 where Arm's AAPCS64 is followed. There they are different sizes.
13 // UNSUPPORTED: target={{arm64|armv(7|8)(l|m)?|powerpc|powerpc64}}-{{.+}}
14 // MSVC configurations have long double equal to regular double on all
15 // architectures.
16 // UNSUPPORTED: target={{.+}}-pc-windows-msvc
17 // ARM/AArch64 MinGW also has got long double equal to regular double, just
18 // like MSVC (thus match both MinGW and MSVC here, for those architectures).
19 // UNSUPPORTED: target={{aarch64|armv7}}-{{.*}}-windows-{{.+}}
20
21 // <compare>
22
23 // template<class T> constexpr strong_ordering strong_order(const T& a, const T& b);
24
25 // libc++ does not support strong_order(long double, long double) quite yet.
26 // This test verifies the error message we give for that case.
27 // TODO: remove this test once long double is properly supported.
28
29 #include <compare>
30
31 #include "test_macros.h"
32
f()33 void f() {
34 long double ld = 3.14;
35 (void)std::strong_order(ld, ld); // expected-error@*:* {{std::strong_order is unimplemented for this floating-point type}}
36 }
37