154 lines
4.9 KiB
C++
154 lines
4.9 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// test <stdlib.h>
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#include <stdlib.h>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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#ifdef abs
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#error abs is defined
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#endif
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#ifdef labs
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#error labs is defined
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#endif
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#ifdef llabs
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#error llabs is defined
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#endif
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#ifdef div
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#error div is defined
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#endif
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#ifdef ldiv
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#error ldiv is defined
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#endif
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#ifdef lldiv
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#error lldiv is defined
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#endif
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#ifndef EXIT_FAILURE
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#error EXIT_FAILURE not defined
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#endif
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#ifndef EXIT_SUCCESS
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#error EXIT_SUCCESS not defined
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#endif
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#ifndef MB_CUR_MAX
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#error MB_CUR_MAX not defined
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#endif
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#ifndef NULL
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#error NULL not defined
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#endif
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#ifndef RAND_MAX
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#error RAND_MAX not defined
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#endif
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template <class T, class = decltype(::abs(std::declval<T>()))>
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std::true_type has_abs_imp(int);
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template <class T>
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std::false_type has_abs_imp(...);
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template <class T>
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struct has_abs : decltype(has_abs_imp<T>(0)) {};
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void test_abs() {
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TEST_DIAGNOSTIC_PUSH
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TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
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ASSERT_SAME_TYPE(float, decltype(abs((float)0)));
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ASSERT_SAME_TYPE(double, decltype(abs((double)0)));
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ASSERT_SAME_TYPE(long double, decltype(abs((long double)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((int)0)));
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ASSERT_SAME_TYPE(long, decltype(abs((long)0)));
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ASSERT_SAME_TYPE(long long, decltype(abs((long long)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((unsigned char)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((unsigned short)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((signed char)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((short)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((unsigned char)0)));
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ASSERT_SAME_TYPE(int, decltype(abs((char)0)));
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static_assert(!has_abs<unsigned>::value, "");
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static_assert(!has_abs<unsigned long>::value, "");
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static_assert(!has_abs<unsigned long long>::value, "");
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static_assert(!has_abs<size_t>::value, "");
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TEST_DIAGNOSTIC_POP
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assert(abs(-1.) == 1);
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}
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int main(int, char**) {
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size_t s = 0; ((void)s);
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div_t d; ((void)d);
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ldiv_t ld; ((void)ld);
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lldiv_t lld; ((void)lld);
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char** endptr = 0;
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ASSERT_SAME_TYPE(double, decltype(atof("")));
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ASSERT_SAME_TYPE(int, decltype(atoi("")));
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ASSERT_SAME_TYPE(long, decltype(atol("")));
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ASSERT_SAME_TYPE(long long, decltype(atoll("")));
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ASSERT_SAME_TYPE(char*, decltype(getenv("")));
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ASSERT_SAME_TYPE(double, decltype(strtod("", endptr)));
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ASSERT_SAME_TYPE(float, decltype(strtof("", endptr)));
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ASSERT_SAME_TYPE(long double, decltype(strtold("", endptr)));
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ASSERT_SAME_TYPE(long, decltype(strtol("", endptr,0)));
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ASSERT_SAME_TYPE(long long, decltype(strtoll("", endptr,0)));
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ASSERT_SAME_TYPE(unsigned long, decltype(strtoul("", endptr,0)));
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ASSERT_SAME_TYPE(unsigned long long, decltype(strtoull("", endptr,0)));
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ASSERT_SAME_TYPE(int, decltype(rand()));
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ASSERT_SAME_TYPE(void, decltype(srand(0)));
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// aligned_alloc tested in stdlib_h.aligned_alloc.compile.pass.cpp
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void* pv = 0;
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void (*handler)() = 0;
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int (*comp)(void const*, void const*) = 0;
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ASSERT_SAME_TYPE(void*, decltype(calloc(0,0)));
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ASSERT_SAME_TYPE(void, decltype(free(0)));
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ASSERT_SAME_TYPE(void*, decltype(malloc(0)));
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ASSERT_SAME_TYPE(void*, decltype(realloc(0,0)));
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ASSERT_SAME_TYPE(void, decltype(abort()));
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ASSERT_SAME_TYPE(int, decltype(atexit(handler)));
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ASSERT_SAME_TYPE(void, decltype(exit(0)));
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ASSERT_SAME_TYPE(void, decltype(_Exit(0)));
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ASSERT_SAME_TYPE(char*, decltype(getenv("")));
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ASSERT_SAME_TYPE(int, decltype(system("")));
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ASSERT_SAME_TYPE(void*, decltype(bsearch(pv,pv,0,0,comp)));
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ASSERT_SAME_TYPE(void, decltype(qsort(pv,0,0,comp)));
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ASSERT_SAME_TYPE(int, decltype(abs(0)));
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ASSERT_SAME_TYPE(long, decltype(labs((long)0)));
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ASSERT_SAME_TYPE(long long, decltype(llabs((long long)0)));
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ASSERT_SAME_TYPE(div_t, decltype(div(0,0)));
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ASSERT_SAME_TYPE(ldiv_t, decltype(ldiv(0L,0L)));
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ASSERT_SAME_TYPE(lldiv_t, decltype(lldiv(0LL,0LL)));
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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wchar_t* pw = 0;
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const wchar_t* pwc = 0;
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char* pc = 0;
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ASSERT_SAME_TYPE(int, decltype(mblen("",0)));
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ASSERT_SAME_TYPE(int, decltype(mbtowc(pw,"",0)));
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ASSERT_SAME_TYPE(int, decltype(wctomb(pc,L' ')));
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ASSERT_SAME_TYPE(size_t, decltype(mbstowcs(pw,"",0)));
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ASSERT_SAME_TYPE(size_t, decltype(wcstombs(pc,pwc,0)));
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#endif
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test_abs();
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return 0;
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}
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