89 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS10 11// test numeric_limits12 13// The default numeric_limits<T> template shall have all members, but with14// 0 or false values.15 16#include <limits>17#include <cassert>18 19#include "test_macros.h"20 21struct A22{23 A(int i = 0) : data_(i) {}24 int data_;25};26 27bool operator == (const A& x, const A& y) {return x.data_ == y.data_;}28 29int main(int, char**)30{31 static_assert(std::numeric_limits<A>::is_specialized == false,32 "std::numeric_limits<A>::is_specialized == false");33 assert(std::numeric_limits<A>::min() == A());34 assert(std::numeric_limits<A>::max() == A());35 assert(std::numeric_limits<A>::lowest() == A());36 static_assert(std::numeric_limits<A>::digits == 0,37 "std::numeric_limits<A>::digits == 0");38 static_assert(std::numeric_limits<A>::digits10 == 0,39 "std::numeric_limits<A>::digits10 == 0");40 static_assert(std::numeric_limits<A>::max_digits10 == 0,41 "std::numeric_limits<A>::max_digits10 == 0");42 static_assert(std::numeric_limits<A>::is_signed == false,43 "std::numeric_limits<A>::is_signed == false");44 static_assert(std::numeric_limits<A>::is_integer == false,45 "std::numeric_limits<A>::is_integer == false");46 static_assert(std::numeric_limits<A>::is_exact == false,47 "std::numeric_limits<A>::is_exact == false");48 static_assert(std::numeric_limits<A>::radix == 0,49 "std::numeric_limits<A>::radix == 0");50 assert(std::numeric_limits<A>::epsilon() == A());51 assert(std::numeric_limits<A>::round_error() == A());52 static_assert(std::numeric_limits<A>::min_exponent == 0,53 "std::numeric_limits<A>::min_exponent == 0");54 static_assert(std::numeric_limits<A>::min_exponent10 == 0,55 "std::numeric_limits<A>::min_exponent10 == 0");56 static_assert(std::numeric_limits<A>::max_exponent == 0,57 "std::numeric_limits<A>::max_exponent == 0");58 static_assert(std::numeric_limits<A>::max_exponent10 == 0,59 "std::numeric_limits<A>::max_exponent10 == 0");60 static_assert(std::numeric_limits<A>::has_infinity == false,61 "std::numeric_limits<A>::has_infinity == false");62 static_assert(std::numeric_limits<A>::has_quiet_NaN == false,63 "std::numeric_limits<A>::has_quiet_NaN == false");64 static_assert(std::numeric_limits<A>::has_signaling_NaN == false,65 "std::numeric_limits<A>::has_signaling_NaN == false");66 static_assert(std::numeric_limits<A>::has_denorm == std::denorm_absent,67 "std::numeric_limits<A>::has_denorm == std::denorm_absent");68 static_assert(std::numeric_limits<A>::has_denorm_loss == false,69 "std::numeric_limits<A>::has_denorm_loss == false");70 assert(std::numeric_limits<A>::infinity() == A());71 assert(std::numeric_limits<A>::quiet_NaN() == A());72 assert(std::numeric_limits<A>::signaling_NaN() == A());73 assert(std::numeric_limits<A>::denorm_min() == A());74 static_assert(std::numeric_limits<A>::is_iec559 == false,75 "std::numeric_limits<A>::is_iec559 == false");76 static_assert(std::numeric_limits<A>::is_bounded == false,77 "std::numeric_limits<A>::is_bounded == false");78 static_assert(std::numeric_limits<A>::is_modulo == false,79 "std::numeric_limits<A>::is_modulo == false");80 static_assert(std::numeric_limits<A>::traps == false,81 "std::numeric_limits<A>::traps == false");82 static_assert(std::numeric_limits<A>::tinyness_before == false,83 "std::numeric_limits<A>::tinyness_before == false");84 static_assert(std::numeric_limits<A>::round_style == std::round_toward_zero,85 "std::numeric_limits<A>::round_style == std::round_toward_zero");86 87 return 0;88}89