75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
/*
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pybind11/complex.h: Complex number support
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Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE file.
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*/
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#pragma once
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#include "pybind11.h"
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#include <complex>
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/// glibc defines I as a macro which breaks things, e.g., boost template names
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#ifdef I
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# undef I
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#endif
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PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
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template <typename T>
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struct format_descriptor<std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>> {
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static constexpr const char c = format_descriptor<T>::c;
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static constexpr const char value[3] = {'Z', c, '\0'};
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static std::string format() { return std::string(value); }
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};
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#ifndef PYBIND11_CPP17
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template <typename T>
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constexpr const char
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format_descriptor<std::complex<T>,
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detail::enable_if_t<std::is_floating_point<T>::value>>::value[3];
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#endif
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PYBIND11_NAMESPACE_BEGIN(detail)
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template <typename T>
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struct is_fmt_numeric<std::complex<T>, detail::enable_if_t<std::is_floating_point<T>::value>> {
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static constexpr bool value = true;
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static constexpr int index = is_fmt_numeric<T>::index + 3;
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};
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template <typename T>
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class type_caster<std::complex<T>> {
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public:
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bool load(handle src, bool convert) {
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if (!src) {
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return false;
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}
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if (!convert && !PyComplex_Check(src.ptr())) {
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return false;
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}
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Py_complex result = PyComplex_AsCComplex(src.ptr());
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if (result.real == -1.0 && PyErr_Occurred()) {
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PyErr_Clear();
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return false;
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}
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value = std::complex<T>((T) result.real, (T) result.imag);
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return true;
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}
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static handle
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cast(const std::complex<T> &src, return_value_policy /* policy */, handle /* parent */) {
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return PyComplex_FromDoubles((double) src.real(), (double) src.imag());
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}
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PYBIND11_TYPE_CASTER(std::complex<T>, const_name("complex"));
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};
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PYBIND11_NAMESPACE_END(detail)
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PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
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