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