mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2025-04-06 07:12:24 +00:00
1670772adc
Summary: All overloads of `::abs` and `std::abs` must be present in both `<cmath>` and `<cstdlib>`. This is problematic to implement because C defines `fabs` in `math.h` and `labs` in `stdlib.h`. This introduces a circular dependency between the two headers. This patch implements that requirement by moving `abs` into `math.h` and making `stdlib.h` include `math.h`. In order to get the underlying C declarations from the "real" `stdlib.h` inside our `math.h` we need some trickery. Specifically we need to make `stdlib.h` include next itself. Suggestions for a cleaner implementation are welcome. Reviewers: mclow.lists, ldionne Reviewed By: ldionne Subscribers: krytarowski, fedor.sergeev, dexonsmith, jdoerfert, jsji, libcxx-commits Differential Revision: https://reviews.llvm.org/D60097 llvm-svn: 359020
162 lines
7.1 KiB
C++
162 lines
7.1 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// test <cstdlib>
|
|
|
|
#include <cstdlib>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
// As of 1/10/2015 clang emits a -Wnonnull warnings even if the warning occurs
|
|
// in an unevaluated context. For this reason we manually suppress the warning.
|
|
#if defined(__clang__)
|
|
#pragma clang diagnostic ignored "-Wnonnull"
|
|
#endif
|
|
|
|
#ifndef EXIT_FAILURE
|
|
#error EXIT_FAILURE not defined
|
|
#endif
|
|
|
|
#ifndef EXIT_SUCCESS
|
|
#error EXIT_SUCCESS not defined
|
|
#endif
|
|
|
|
#ifndef MB_CUR_MAX
|
|
#error MB_CUR_MAX not defined
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#error NULL not defined
|
|
#endif
|
|
|
|
#ifndef RAND_MAX
|
|
#error RAND_MAX not defined
|
|
#endif
|
|
|
|
template <class TestType, class IntType>
|
|
void test_div_struct() {
|
|
TestType obj;
|
|
static_assert(sizeof(obj) >= sizeof(IntType) * 2, ""); // >= to account for alignment.
|
|
static_assert((std::is_same<decltype(obj.quot), IntType>::value), "");
|
|
static_assert((std::is_same<decltype(obj.rem), IntType>::value), "");
|
|
((void) obj);
|
|
};
|
|
|
|
template <class T, class = decltype(std::abs(std::declval<T>()))>
|
|
std::true_type has_abs_imp(int);
|
|
template <class T>
|
|
std::false_type has_abs_imp(...);
|
|
|
|
template <class T>
|
|
struct has_abs : decltype(has_abs_imp<T>(0)) {};
|
|
|
|
void test_abs() {
|
|
#ifdef __clang__
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wabsolute-value"
|
|
#endif
|
|
static_assert((std::is_same<decltype(std::abs((float)0)), float>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs((double)0)), double>::value), "");
|
|
static_assert(
|
|
(std::is_same<decltype(std::abs((long double)0)), long double>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs((int)0)), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value),
|
|
"");
|
|
static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value),
|
|
"");
|
|
static_assert((std::is_same<decltype(std::abs((unsigned short)0)), int>::value),
|
|
"");
|
|
static_assert((std::is_same<decltype(std::abs((signed char)0)), int>::value),
|
|
"");
|
|
static_assert((std::is_same<decltype(std::abs((short)0)), int>::value),
|
|
"");
|
|
static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value),
|
|
"");
|
|
static_assert((std::is_same<decltype(std::abs((char)0)), int>::value),
|
|
"");
|
|
|
|
static_assert(!has_abs<unsigned>::value, "");
|
|
static_assert(!has_abs<unsigned long>::value, "");
|
|
static_assert(!has_abs<unsigned long long>::value, "");
|
|
static_assert(!has_abs<size_t>::value, "");
|
|
|
|
#ifdef __clang__
|
|
#pragma clang diagnostic pop
|
|
#endif
|
|
|
|
assert(std::abs(-1.) == 1);
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
std::size_t s = 0;
|
|
((void)s);
|
|
static_assert((std::is_same<std::size_t, decltype(sizeof(int))>::value), "");
|
|
test_div_struct<std::div_t, int>();
|
|
test_div_struct<std::ldiv_t, long>();
|
|
test_div_struct<std::lldiv_t, long long>();
|
|
char** endptr = 0;
|
|
static_assert((std::is_same<decltype(std::atof("")), double>::value), "");
|
|
static_assert((std::is_same<decltype(std::atoi("")), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::atol("")), long>::value), "");
|
|
static_assert((std::is_same<decltype(std::atoll("")), long long>::value), "");
|
|
static_assert((std::is_same<decltype(std::getenv("")), char*>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtod("", endptr)), double>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtof("", endptr)), float>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtold("", endptr)), long double>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtol("", endptr,0)), long>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtoll("", endptr,0)), long long>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtoul("", endptr,0)), unsigned long>::value), "");
|
|
static_assert((std::is_same<decltype(std::strtoull("", endptr,0)), unsigned long long>::value), "");
|
|
static_assert((std::is_same<decltype(std::rand()), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::srand(0)), void>::value), "");
|
|
|
|
// Microsoft does not implement aligned_alloc in their C library
|
|
#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && !defined(_WIN32)
|
|
static_assert((std::is_same<decltype(aligned_alloc(0,0)), void*>::value), "");
|
|
#endif
|
|
|
|
static_assert((std::is_same<decltype(std::calloc(0,0)), void*>::value), "");
|
|
static_assert((std::is_same<decltype(std::free(0)), void>::value), "");
|
|
static_assert((std::is_same<decltype(std::malloc(0)), void*>::value), "");
|
|
static_assert((std::is_same<decltype(std::realloc(0,0)), void*>::value), "");
|
|
static_assert((std::is_same<decltype(std::abort()), void>::value), "");
|
|
static_assert((std::is_same<decltype(std::atexit(0)), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::exit(0)), void>::value), "");
|
|
static_assert((std::is_same<decltype(std::_Exit(0)), void>::value), "");
|
|
static_assert((std::is_same<decltype(std::getenv("")), char*>::value), "");
|
|
static_assert((std::is_same<decltype(std::system("")), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::bsearch(0,0,0,0,0)), void*>::value), "");
|
|
static_assert((std::is_same<decltype(std::qsort(0,0,0,0)), void>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs(0)), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
|
|
static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value), "");
|
|
static_assert((std::is_same<decltype(std::labs((long)0)), long>::value), "");
|
|
static_assert((std::is_same<decltype(std::llabs((long long)0)), long long>::value), "");
|
|
static_assert((std::is_same<decltype(std::div(0,0)), std::div_t>::value), "");
|
|
static_assert((std::is_same<decltype(std::div(0L,0L)), std::ldiv_t>::value), "");
|
|
static_assert((std::is_same<decltype(std::div(0LL,0LL)), std::lldiv_t>::value), "");
|
|
static_assert((std::is_same<decltype(std::ldiv(0L,0L)), std::ldiv_t>::value), "");
|
|
static_assert((std::is_same<decltype(std::lldiv(0LL,0LL)), std::lldiv_t>::value), "");
|
|
wchar_t* pw = 0;
|
|
const wchar_t* pwc = 0;
|
|
char* pc = 0;
|
|
static_assert((std::is_same<decltype(std::mblen("",0)), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::mbtowc(pw,"",0)), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::wctomb(pc,L' ')), int>::value), "");
|
|
static_assert((std::is_same<decltype(std::mbstowcs(pw,"",0)), std::size_t>::value), "");
|
|
static_assert((std::is_same<decltype(std::wcstombs(pc,pwc,0)), std::size_t>::value), "");
|
|
|
|
test_abs();
|
|
|
|
return 0;
|
|
}
|