Branch data     Line data    Source code

       1                 :            : /******************************************************************************
       2                 :            :  * Top contributors (to current version):
       3                 :            :  *   Aina Niemetz, Gereon Kremer, Andrew Reynolds
       4                 :            :  *
       5                 :            :  * This file is part of the cvc5 project.
       6                 :            :  *
       7                 :            :  * Copyright (c) 2009-2025 by the authors listed in the file AUTHORS
       8                 :            :  * in the top-level source directory and their institutional affiliations.
       9                 :            :  * All rights reserved.  See the file COPYING in the top-level source
      10                 :            :  * directory for licensing information.
      11                 :            :  * ****************************************************************************
      12                 :            :  *
      13                 :            :  * Black box testing of cvc5::RealAlgebraicNumber.
      14                 :            :  */
      15                 :            : 
      16                 :            : #include "test.h"
      17                 :            : #include "util/real_algebraic_number.h"
      18                 :            : 
      19                 :            : namespace cvc5::internal {
      20                 :            : namespace test {
      21                 :            : 
      22                 :            : #ifndef CVC5_POLY_IMP
      23                 :            : #error "This unit test should only be enabled for CVC5_POLY_IMP"
      24                 :            : #endif
      25                 :            : 
      26                 :            : class TestUtilBlackRealAlgebraicNumber : public TestInternal
      27                 :            : {
      28                 :            : };
      29                 :            : 
      30                 :          2 : TEST_F(TestUtilBlackRealAlgebraicNumber, creation)
      31                 :            : {
      32         [ -  + ]:          1 :   ASSERT_TRUE(RealAlgebraicNumber().isZero());
      33         [ -  + ]:          1 :   ASSERT_TRUE(RealAlgebraicNumber(Integer(1)).isOne());
      34         [ -  + ]:          1 :   ASSERT_FALSE(RealAlgebraicNumber(Rational(2)).isOne());
      35                 :          2 :   RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
      36         [ -  + ]:          1 :   ASSERT_TRUE(RealAlgebraicNumber(Integer(1)) < sqrt2);
      37         [ -  + ]:          1 :   ASSERT_TRUE(sqrt2 < RealAlgebraicNumber(Integer(2)));
      38                 :            : }
      39                 :            : 
      40                 :          2 : TEST_F(TestUtilBlackRealAlgebraicNumber, comparison)
      41                 :            : {
      42                 :          2 :   RealAlgebraicNumber msqrt3({-3, 0, 1}, -2, -1);
      43                 :          2 :   RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
      44                 :          1 :   RealAlgebraicNumber zero;
      45                 :          2 :   RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
      46                 :          2 :   RealAlgebraicNumber sqrt3({-3, 0, 1}, 1, 2);
      47                 :            : 
      48         [ -  + ]:          1 :   ASSERT_TRUE(msqrt3 < msqrt2);
      49         [ -  + ]:          1 :   ASSERT_TRUE(msqrt3 < zero);
      50         [ -  + ]:          1 :   ASSERT_TRUE(msqrt3 < sqrt2);
      51         [ -  + ]:          1 :   ASSERT_TRUE(msqrt3 < sqrt3);
      52         [ -  + ]:          1 :   ASSERT_TRUE(msqrt2 < zero);
      53         [ -  + ]:          1 :   ASSERT_TRUE(msqrt2 < sqrt2);
      54         [ -  + ]:          1 :   ASSERT_TRUE(msqrt2 < sqrt3);
      55         [ -  + ]:          1 :   ASSERT_TRUE(zero < sqrt2);
      56         [ -  + ]:          1 :   ASSERT_TRUE(zero < sqrt3);
      57         [ -  + ]:          1 :   ASSERT_TRUE(sqrt2 < sqrt3);
      58                 :            : }
      59                 :            : 
      60                 :          2 : TEST_F(TestUtilBlackRealAlgebraicNumber, sgn)
      61                 :            : {
      62                 :          2 :   RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
      63                 :          1 :   RealAlgebraicNumber zero;
      64                 :          2 :   RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
      65                 :            : 
      66         [ -  + ]:          1 :   ASSERT_EQ(msqrt2.sgn(), -1);
      67         [ -  + ]:          1 :   ASSERT_EQ(zero.sgn(), 0);
      68         [ -  + ]:          1 :   ASSERT_EQ(sqrt2.sgn(), 1);
      69                 :            : }
      70                 :            : 
      71                 :          2 : TEST_F(TestUtilBlackRealAlgebraicNumber, arithmetic)
      72                 :            : {
      73                 :          2 :   RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
      74                 :          1 :   RealAlgebraicNumber zero;
      75                 :          2 :   RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
      76                 :            : 
      77         [ -  + ]:          2 :   ASSERT_EQ(msqrt2 + sqrt2, zero);
      78         [ -  + ]:          2 :   ASSERT_EQ(-msqrt2, sqrt2);
      79         [ -  + ]:          2 :   ASSERT_EQ(-msqrt2 + sqrt2, sqrt2 + sqrt2);
      80         [ -  + ]:          2 :   ASSERT_EQ(msqrt2 * sqrt2, RealAlgebraicNumber(Integer(-2)));
      81                 :            : }
      82                 :            : 
      83                 :          2 : TEST_F(TestUtilBlackRealAlgebraicNumber, division)
      84                 :            : {
      85                 :          2 :   RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
      86                 :          2 :   RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
      87                 :          2 :   RealAlgebraicNumber mone({1, 1}, -2, 0);
      88                 :            : 
      89         [ -  + ]:          2 :   ASSERT_EQ(msqrt2 / sqrt2, mone);
      90         [ -  + ]:          1 :   ASSERT_TRUE((sqrt2 / sqrt2).isOne());
      91                 :            : }
      92                 :            : 
      93                 :            : }  // namespace test
      94                 :            : }  // namespace cvc5::internal