164 lines
4.4 KiB
C++
164 lines
4.4 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2023 - 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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#pragma once
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#include <cstdint>
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//#if defined(__CUDA_ARCH__)
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//# include <cuda/std/complex>
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//#else
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//# include <complex>
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//#endif
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// With CUDA 11.4, builds show spurious "-Wconversion" warnings
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// on line 656 of thrust/detail/type_traits.h.
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// These pragmas suppress the warnings.
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wconversion"
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#include <thrust/complex.h>
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#pragma GCC diagnostic pop
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#include <cute/config.hpp>
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namespace cute
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{
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//#if defined(__CUDA_ARCH__)
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//template <class T>
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//using complex = cuda::std::complex<T>;
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//#else
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//template <class T>
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//using complex = std::complex<T>;
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//#endif
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//template <class T>
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//using complex = thrust::complex<T>;
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using thrust::complex;
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template <class T>
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CUTE_HOST_DEVICE
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T real(complex<T> const& z) {
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return z.real();
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}
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template <class T>
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CUTE_HOST_DEVICE
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T imag(complex<T> const& z) {
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return z.imag();
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}
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template <class T>
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CUTE_HOST_DEVICE
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complex<T> conj(complex<T> const& z) {
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return complex<T>(real(z), -imag(z));
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}
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// cute::conj forwards scalars
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template <class T>
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CUTE_HOST_DEVICE
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T conj(T z) {
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return z;
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}
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//CUTE_HOST_DEVICE constexpr
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//float conj(float z) { return z; }
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//CUTE_HOST_DEVICE constexpr
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//double conj(double z) { return z; }
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/// Fused multiply-add for complex numbers
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template <class T>
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CUTE_HOST_DEVICE constexpr
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void
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fma(complex<T> & d,
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complex<T> const& a,
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complex<T> const& b,
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complex<T> const& c)
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{
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d.real(c.real() + a.real() * b.real());
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d.imag(c.imag() + a.real() * b.imag());
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d.real(d.real() - a.imag() * b.imag());
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d.imag(d.imag() + a.imag() * b.real());
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}
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/// Fused multiply-add for triplets
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template <class T>
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CUTE_HOST_DEVICE constexpr
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void
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fma(complex<T> const& a,
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complex<T> const& b,
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complex<T> & c)
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{
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return fma(c, a, b, c);
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}
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/// Used to determine the real-valued underlying type of a numeric type T
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template <class T>
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struct RealType {
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using Type = T;
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};
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/// Partial specialization for complex-valued type
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template <class T>
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struct RealType<complex<T>> {
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using Type = T;
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};
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//////////////////////////////////////////////////////////////////////////////////////////////////
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template <class T>
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struct is_complex {
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static bool const value = false;
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};
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template <class T>
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struct is_complex<complex<T>> {
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static bool const value = true;
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};
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//////////////////////////////////////////////////////////////////////////////////////////////////
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// Display utilities
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template <class T>
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CUTE_HOST std::ostream& operator<<(std::ostream& os, complex<T> const& z)
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{
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T _r = z.real();
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T _i = z.imag();
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if (bool(_i)) {
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return os << _r << "+i" << _i;
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} else {
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return os << _r;
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}
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}
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} // end namespace cute
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