log2をstdc++のものに

qulacs · Sep 20, 2024 · 9f18451 · 9f18451
1 parent 7d5773c
commit 9f18451
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/tests/state/state_vector_test.cpp b/tests/state/state_vector_test.cpp
@@ -170,7 +170,7 @@ TEST(StateVectorTest, EntropyCalculation) {
             for (std::uint64_t ind = 0; ind < dim; ++ind) {
                 CComplex z = test_state[ind];
                 double prob = z.real() * z.real() + z.imag() * z.imag();
-                if (prob > eps) ent += -prob * log2(prob);
+                if (prob > eps) ent += -prob * std::log2(prob);
             }
             ASSERT_NEAR(ent, state.get_entropy(), eps);
         }