diff options
Diffstat (limited to 'test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp')
-rw-r--r-- | test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp b/test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp new file mode 100644 index 0000000000000..03bd10d465d10 --- /dev/null +++ b/test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp @@ -0,0 +1,69 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <complex> + +// template<class T> +// complex<T> +// pow(const complex<T>& x, const T& y); + +#include <complex> +#include <cassert> + +#include "../cases.h" + +template <class T> +void +test(const std::complex<T>& a, const T& b, std::complex<T> x) +{ + std::complex<T> c = pow(a, b); + is_about(real(c), real(x)); + is_about(imag(c), imag(x)); +} + +template <class T> +void +test() +{ + test(std::complex<T>(2, 3), T(2), std::complex<T>(-5, 12)); +} + +void test_edges() +{ + const double pi = std::atan2(+0., -0.); + const unsigned N = sizeof(x) / sizeof(x[0]); + for (unsigned i = 0; i < N; ++i) + { + for (unsigned j = 0; j < N; ++j) + { + std::complex<double> r = pow(x[i], real(x[j])); + std::complex<double> z = exp(std::complex<double>(real(x[j])) * log(x[i])); + if (std::isnan(real(r))) + assert(std::isnan(real(z))); + else + { + assert(real(r) == real(z)); + } + if (std::isnan(imag(r))) + assert(std::isnan(imag(z))); + else + { + assert(imag(r) == imag(z)); + } + } + } +} + +int main() +{ + test<float>(); + test<double>(); + test<long double>(); + test_edges(); +} |