Dispatch.h File Reference

(e0652d62 (Thu Aug 27 13:31:28 2020 -0400))

#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:

[&] {                                                   \
        if (DTYPE == open3d::core::Dtype::Float32) {        \
            using scalar_t = float;                         \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::Float64) { \
            using scalar_t = double;                        \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::Int32) {   \
            using scalar_t = int32_t;                       \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::Int64) {   \
            using scalar_t = int64_t;                       \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::UInt8) {   \
            using scalar_t = uint8_t;                       \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::UInt16) {  \
            using scalar_t = uint16_t;                      \
            return __VA_ARGS__();                           \
        } else {                                            \
            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::core::Dtype::Bool) {           \
            using scalar_t = bool;                          \
            return __VA_ARGS__();                           \
        } else {                                            \
            DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, __VA_ARGS__); \
        }                                                   \
    }()