dpnp_utils.hpp

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#pragma once
#ifndef BACKEND_UTILS_H // Cython compatibility
#define BACKEND_UTILS_H
 
#include <complex>
#include <iostream>
#include <stdexcept>
#include <string>
#include <type_traits>
#include <vector>
 
#include <sycl/sycl.hpp>
 
#include <dpnp_iface_fptr.hpp>
 
template <typename T>
static inline void validate_type_for_device(const sycl::device &d)
{
    if constexpr (std::is_same_v<T, double>) {
        if (!d.has(sycl::aspect::fp64)) {
            throw std::runtime_error("Device " +
                                     d.get_info<sycl::info::device::name>() +
                                     " does not support type 'double'");
        }
    }
    else if constexpr (std::is_same_v<T, std::complex<double>>) {
        if (!d.has(sycl::aspect::fp64)) {
            throw std::runtime_error(
                "Device " + d.get_info<sycl::info::device::name>() +
                " does not support type 'complex<double>'");
        }
    }
    else if constexpr (std::is_same_v<T, sycl::half>) {
        if (!d.has(sycl::aspect::fp16)) {
            throw std::runtime_error("Device " +
                                     d.get_info<sycl::info::device::name>() +
                                     " does not support type 'half'");
        }
    }
}
 
template <typename T>
static inline void validate_type_for_device(const sycl::queue &q)
{
    validate_type_for_device<T>(q.get_device());
}
 
template <typename T>
std::ostream &operator<<(std::ostream &out, const std::vector<T> &vec)
{
    std::string delimiter;
    out << "{";
    // std::copy(vec.begin(), vec.end(), std::ostream_iterator<T>(out, ", "));
    // out << "\b\b}"; // last two 'backspaces' needs to eliminate last
    // delimiter. ex: {2, 3, 4, }
    for (auto &elem : vec) {
        out << delimiter << elem;
        if (delimiter.empty()) {
            delimiter.assign(", ");
        }
    }
    out << "}";
 
    return out;
}
 
template <typename T>
std::ostream &operator<<(std::ostream &out, DPNPFuncType elem)
{
    out << static_cast<size_t>(elem);
 
    return out;
}
 
#endif // BACKEND_UTILS_H