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core/compiler_hints: add may_be_zero()

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This commit is contained in:
Benjamin Valentin 2023-05-23 17:38:05 +02:00
parent 4c27aff295
commit 0ee46e8d42
1 changed files with 13 additions and 0 deletions
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13
core/lib/include/compiler_hints.h
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@ -181,6 +181,19 @@ extern "C" {
#define assume(cond) assert(cond)
#endif
/**
* @brief Wrapper function to silence "comparison is always false due to limited
* range of data type" type of warning when the warning is caused by a
* preprocessor configuration value that may be zero.
*
* @param[in] n Variable that may be zero
* @return The same variable @p n
*/
static inline unsigned may_be_zero(unsigned n)
{
return n;
}
#ifdef __cplusplus
}
#endif