diff options
Diffstat (limited to 'test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp')
-rw-r--r-- | test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp b/test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp new file mode 100644 index 000000000000..881427600686 --- /dev/null +++ b/test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp @@ -0,0 +1,70 @@ +//===----------------------------------------------------------------------===// +// +// 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> +// tan(const complex<T>& x); + +#include <complex> +#include <cassert> + +#include "../cases.h" + +template <class T> +void +test(const std::complex<T>& c, std::complex<T> x) +{ + assert(tan(c) == x); +} + +template <class T> +void +test() +{ + test(std::complex<T>(0, 0), std::complex<T>(0, 0)); + test(std::complex<T>(10000, -10000), std::complex<T>(0, -1)); +} + +void test_edges() +{ + typedef std::complex<double> C; + const double pi = std::atan2(+0., -0.); + const unsigned N = sizeof(x) / sizeof(x[0]); + for (unsigned i = 0; i < N; ++i) + { + std::complex<double> r = tan(x[i]); + std::complex<double> t1(-imag(x[i]), real(x[i])); + std::complex<double> t2 = tanh(t1); + std::complex<double> z(imag(t2), -real(t2)); + if (std::isnan(real(r))) + assert(std::isnan(real(z))); + else + { + assert(real(r) == real(z)); + assert(std::signbit(real(r)) == std::signbit(real(z))); + } + if (std::isnan(imag(r))) + assert(std::isnan(imag(z))); + else + { + assert(imag(r) == imag(z)); + assert(std::signbit(imag(r)) == std::signbit(imag(z))); + } + } +} + +int main() +{ + test<float>(); + test<double>(); + test<long double>(); + test_edges(); +} |