Dispatch.h File Reference

#include "Open3D/Core/Dtype.h"
#include "Open3D/Utility/Console.h"

Go to the source code of this file.

Macros
#define	DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, ...)
#define	DISPATCH_DTYPE_TO_TEMPLATE_WITH_BOOL(DTYPE, ...)

Macro Definition Documentation

DISPATCH_DTYPE_TO_TEMPLATE

#define DISPATCH_DTYPE_TO_TEMPLATE	(		DTYPE,
			...
	)

Value:

[&] {                                                    \
        switch (DTYPE) {                                     \
            case open3d::Dtype::Float32: {                   \
                using scalar_t = float;                      \
                return __VA_ARGS__();                        \
            }                                                \
            case open3d::Dtype::Float64: {                   \
                using scalar_t = double;                     \
                return __VA_ARGS__();                        \
            }                                                \
            case open3d::Dtype::Int32: {                     \
                using scalar_t = int32_t;                    \
                return __VA_ARGS__();                        \
            }                                                \
            case open3d::Dtype::Int64: {                     \
                using scalar_t = int64_t;                    \
                return __VA_ARGS__();                        \
            }                                                \
            case open3d::Dtype::UInt8: {                     \
                using scalar_t = uint8_t;                    \
                return __VA_ARGS__();                        \
            }                                                \
            default:                                         \
                utility::LogError("Unsupported data type."); \
        }                                                    \
    }()

Call a numerical templated funciton based on Dtype. Warp the function to a lambda function to use DISPATCH_DTYPE_TO_TEMPLATE.

Before: if (dtype == Dtype::Float32) { func<float>(args); } else if (dtype == Dtype::Float64) { func<double>(args); } else ...

Now: DISPATCH_DTYPE_TO_TEMPLATE(dtype, [&]() { func<scalar_t>(args); });

Inspired by: https://github.com/pytorch/pytorch/blob/master/aten/src/ATen/Dispatch.h

DISPATCH_DTYPE_TO_TEMPLATE_WITH_BOOL

#define DISPATCH_DTYPE_TO_TEMPLATE_WITH_BOOL	(		DTYPE,
			...
	)

Value:

[&] {                                                   \
        if (DTYPE == open3d::Dtype::Bool) {                 \
            using scalar_t = bool;                          \
            return __VA_ARGS__();                           \
        } else {                                            \
            DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, __VA_ARGS__); \
        }                                                   \
    }()