integralTest.cpp

#include <gtest/gtest.h>

#include "integral.h"

TEST(integralTest, log_2_int) {
  EXPECT_EQ(0, log_2(1));
  EXPECT_EQ(1, log_2(2));
  EXPECT_EQ(2, log_2(4));
  EXPECT_EQ(3, log_2(8));
  EXPECT_EQ(4, log_2(16));

  EXPECT_EQ(2, log_2(3));
  EXPECT_EQ(3, log_2(5));
  EXPECT_EQ(4, log_2(9));
  EXPECT_EQ(5, log_2(17));
}

TEST(integralTest, log_2_mpz) {
  EXPECT_EQ(0, log_2(mpz_class(1)));
  EXPECT_EQ(1, log_2(mpz_class(2)));
  EXPECT_EQ(2, log_2(mpz_class(4)));
  EXPECT_EQ(3, log_2(mpz_class(8)));
  EXPECT_EQ(4, log_2(mpz_class(16)));

  EXPECT_EQ(2, log_2(mpz_class(3)));
  EXPECT_EQ(3, log_2(mpz_class(5)));
  EXPECT_EQ(4, log_2(mpz_class(9)));
  EXPECT_EQ(5, log_2(mpz_class(17)));
}
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