libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/params.verify.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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <random>
  10
  11 // template <class UIntType, UIntType a, UIntType c, UIntType m>
  12 //   class linear_congruential_engine;
  13
  14 // requirements on parameters
  15
  16 #include <random>
  17
  18 int main(int, char**)
  19 {
  20     typedef unsigned long long T;
  21
  22     // expected-error-re@*:* {{static assertion failed due to requirement '1ULL == 0 || 1ULL < 1ULL'{{.*}}linear_congruential_engine invalid parameters}}
  23     std::linear_congruential_engine<T, 0, 0, 0> e2;
  24     // expected-error-re@*:* {{static assertion failed due to requirement '1ULL == 0 || 1ULL < 1ULL'{{.*}}linear_congruential_engine invalid parameters}}
  25     std::linear_congruential_engine<T, 0, 1, 1> e3;
  26     std::linear_congruential_engine<T, 1, 0, 1> e4;
  27     // expected-error-re@*:* {{static assertion failed due to requirement 'is_unsigned<int>::value'{{.*}}_UIntType must be unsigned type}}
  28     std::linear_congruential_engine<int, 0, 0, 0> e5;
  29
  30     return 0;
  31 }