etl/test/test_math.cpp

/******************************************************************************
The MIT License(MIT)

Embedded Template Library.

Copyright(c) 2014 jwellbelove

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******************************************************************************/

#include <UnitTest++/UnitTest++.h>

#include "../log.h"
#include "../pow.h"

namespace
{		
  SUITE(TestMaths)
  {
    //*************************************************************************
    TEST(TestLog0_BASE)
    {
      int actual;

      actual = etl::log<0, 2>::value;
      CHECK_EQUAL(0, actual);

      actual = etl::log<0, 10>::value;
      CHECK_EQUAL(0, actual);
    }

    //*************************************************************************
    TEST(TestLog1_BASE)
    {
      int actual;

      actual = etl::log<1, 2>::value;
      CHECK_EQUAL(0, actual);

      actual = etl::log<1, 10>::value;
      CHECK_EQUAL(0, actual);
    }

    //*************************************************************************
    TEST(TestLog10_BASE)
    {
      int actual;

      actual = etl::log<10, 2>::value;
      CHECK_EQUAL(3, actual);

      actual = etl::log<10, 10>::value;
      CHECK_EQUAL(1, actual);
    }

    //*************************************************************************
    TEST(TestLog100_BASE)
    {
      int actual;

      actual = etl::log<100, 2>::value;
      CHECK_EQUAL(6, actual);

      actual = etl::log<100, 10>::value;
      CHECK_EQUAL(2, actual);
    }

    //*************************************************************************
    TEST(TestLog2)
    {
      int actual;

      actual = etl::log2<0>::value;
      CHECK_EQUAL(0, actual);

      actual = etl::log2<1>::value;
      CHECK_EQUAL(0, actual);

      actual = etl::log2<10>::value;
      CHECK_EQUAL(3, actual);

      actual = etl::log2<100>::value;
      CHECK_EQUAL(6, actual);
    }

    //*************************************************************************
    TEST(TestLog10)
    {
      int actual;

      actual = etl::log10<0>::value;
      CHECK_EQUAL(0, actual);

      actual = etl::log10<1>::value;
      CHECK_EQUAL(0, actual);

      actual = etl::log10<10>::value;
      CHECK_EQUAL(1, actual);

      actual = etl::log10<100>::value;
      CHECK_EQUAL(2, actual);

      actual = etl::log10<100>::value;
      CHECK_EQUAL(2, actual);
    }

    //*************************************************************************
    TEST(TestPow)
    {
      int actual;

      // 2^1
      actual = etl::pow<2, 1>::value;
      CHECK_EQUAL(2, actual);

      // 3^2
      actual = etl::pow<3, 2>::value;
      CHECK_EQUAL(9, actual);

      // 4^3
      actual = etl::pow<4, 3>::value;
      CHECK_EQUAL(64, actual);

      // 5^4
      actual = etl::pow<5, 4>::value;
      CHECK_EQUAL(625, actual);

      // 6^5
      actual = etl::pow<6, 5>::value;
      CHECK_EQUAL(7776, actual);

      // 7^6
      actual = etl::pow<7, 6>::value;
      CHECK_EQUAL(117649, actual);

      // 8^7
      actual = etl::pow<8, 7>::value;
      CHECK_EQUAL(2097152, actual);

      // 9^8
      actual = etl::pow<9, 8>::value;
      CHECK_EQUAL(43046721, actual);

      // 10^9
      actual = etl::pow<10, 9>::value;
      CHECK_EQUAL(1000000000, actual);
    }
  };
}