Dispatch.h File Reference

(9238339 (Tue Mar 14 18:49:09 2023 -0700))

#include "open3d/core/Dtype.h"
#include "open3d/utility/Logging.h"

Go to the source code of this file.

Macros
#define	DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, ...)
#define	DISPATCH_DTYPE_TO_TEMPLATE_WITH_BOOL(DTYPE, ...)
#define	DISPATCH_FLOAT_DTYPE_TO_TEMPLATE(DTYPE, ...)
#define	DISPATCH_FLOAT_INT_DTYPE_TO_TEMPLATE(FDTYPE, IDTYPE, ...)

Macro Definition Documentation

DISPATCH_DTYPE_TO_TEMPLATE

#define DISPATCH_DTYPE_TO_TEMPLATE	(		DTYPE,
			...
	)

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

Before: if (dtype == core::Float32) { func<float>(args); } else if (dtype == core::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::core::Bool) {                  \
            using scalar_t = bool;                          \
            return __VA_ARGS__();                           \
        } else {                                            \
            DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, __VA_ARGS__); \
        }                                                   \
    }()

DISPATCH_FLOAT_DTYPE_TO_TEMPLATE

#define DISPATCH_FLOAT_DTYPE_TO_TEMPLATE	(		DTYPE,
			...
	)

Value:

    [&] {                                                        \
        if (DTYPE == open3d::core::Float32) {                    \
            using scalar_t = float;                              \
            return __VA_ARGS__();                                \
        } else if (DTYPE == open3d::core::Float64) {             \
            using scalar_t = double;                             \
            return __VA_ARGS__();                                \
        } else {                                                 \
            open3d::utility::LogError("Unsupported data type."); \
        }                                                        \
    }()

DISPATCH_FLOAT_INT_DTYPE_TO_TEMPLATE

#define DISPATCH_FLOAT_INT_DTYPE_TO_TEMPLATE	(		FDTYPE,
			IDTYPE,
			...
	)

Value:

    [&] {                                                         \
        if (FDTYPE == open3d::core::Float32 &&                    \
            IDTYPE == open3d::core::Int32) {                      \
            using scalar_t = float;                               \
            using int_t = int32_t;                                \
            return __VA_ARGS__();                                 \
        } else if (FDTYPE == open3d::core::Float32 &&             \
                   IDTYPE == open3d::core::Int64) {               \
            using scalar_t = float;                               \
            using int_t = int64_t;                                \
            return __VA_ARGS__();                                 \
        } else if (FDTYPE == open3d::core::Float64 &&             \
                   IDTYPE == open3d::core::Int32) {               \
            using scalar_t = double;                              \
            using int_t = int32_t;                                \
            return __VA_ARGS__();                                 \
        } else if (FDTYPE == open3d::core::Float64 &&             \
                   IDTYPE == open3d::core::Int64) {               \
            using scalar_t = double;                              \
            using int_t = int64_t;                                \
            return __VA_ARGS__();                                 \
        } else {                                                  \
            open3d::utility::LogError("Unsupported data type.");  \
        }                                                         \
    }()