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// Inspired by https://github.com/NVIDIA/DALI/blob/main/include/dali/core/static_switch.h
// and https://github.com/pytorch/pytorch/blob/master/aten/src/ATen/Dispatch.h
#pragma once
/// @param COND - a boolean expression to switch by
/// @param CONST_NAME - a name given for the constexpr bool variable.
/// @param ... - code to execute for true and false
///
/// Usage:
/// ```
/// BOOL_SWITCH(flag, BoolConst, [&] {
/// some_function<BoolConst>(...);
/// });
/// ```
#define BOOL_SWITCH(COND, CONST_NAME, ...) \
[&] { \
if (COND) { \
static constexpr bool CONST_NAME = true; \
return __VA_ARGS__(); \
} else { \
static constexpr bool CONST_NAME = false; \
return __VA_ARGS__(); \
} \
}()
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