//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// We don't control the implementation of the math.h functions on windows
// UNSUPPORTED: windows
// Check that functions from `<cmath>` that Clang marks with the `[[gnu::const]]` attribute are declared
// `[[nodiscard]]`.
// clang-format off
#include <cmath>
#include "test_macros.h"
void test() {
// These tests rely on Clang's behaviour of adding `[[gnu::const]]` to the double overload of most of the functions
// below.
// Without that attribute being added implicitly, this test can't be checked consistently because its result depends
// on whether we're getting libc++'s own `std::foo(double)` or the underlying C library's `foo(double)`.
#ifdef TEST_COMPILER_CLANG
std::ceil(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::fabs(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::floor(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::cbrt(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::copysign(0., 0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::fmax(0., 0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::fmin(0., 0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::nearbyint(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::rint(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::round(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
std::trunc(0.); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
#endif
std::signbit(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::signbit(0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::signbit(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::signbit(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::signbit(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fpclassify(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fpclassify(0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fpclassify(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fpclassify(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fpclassify(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isfinite(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isfinite(0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isfinite(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isfinite(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isfinite(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isinf(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isinf(0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isinf(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isinf(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isinf(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnan(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnan(0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnan(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnan(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnan(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnormal(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnormal(0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnormal(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnormal(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isnormal(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreater(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreater(0., 0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreater(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreater(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreater(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreaterequal(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreaterequal(0., 0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreaterequal(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreaterequal(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isgreaterequal(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isless(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isless(0., 0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isless(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isless(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isless(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessequal(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessequal(0., 0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessequal(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessequal(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessequal(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessgreater(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessgreater(0., 0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessgreater(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessgreater(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::islessgreater(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isunordered(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isunordered(0., 0.); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isunordered(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isunordered(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::isunordered(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::ceil(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::ceil(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::ceil(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::ceil(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fabs(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fabs(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fabs(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fabs(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::floor(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::floor(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::floor(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::floor(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::cbrt(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::cbrt(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::cbrt(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::cbrt(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::copysign(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::copysign(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::copysign(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::copysign(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmax(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmax(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmax(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmax(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmin(0.f, 0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmin(0.l, 0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmin(0, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::fmin(0U, 0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::nearbyint(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::nearbyint(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::nearbyint(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::nearbyint(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::rint(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::rint(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::rint(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::rint(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::round(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::round(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::round(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::round(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::trunc(0.f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::trunc(0.l); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::trunc(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::trunc(0U); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
}
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