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sys: util: Extend IS_EQ to support unsigned literals

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Extend IS_EQ to include unsigned integer literals like 0U.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
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Krzysztof Chruściński 2024-12-10 12:53:51 +01:00 • committed by Benjamin Cabé
commit 78ba5cd61a
3 changed files with 16402 additions and 4099 deletions
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2
include/zephyr/sys/util_internal.h
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@ -50,7 +50,7 @@
#define Z_IS_ENABLED3(ignore_this, val, ...) val
/* Implementation of IS_EQ(). Returns 1 if _0 and _1 are the same integer from
* 0 to 4095, 0 otherwise.
* 0 to 4096, 0 otherwise.
*/
#define Z_IS_EQ(_0, _1) Z_HAS_COMMA(Z_CAT4(Z_IS_, _0, _EQ_, _1)())

20485
include/zephyr/sys/util_internal_is_eq.h
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14
include/zephyr/sys/util_macro.h
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@ -296,7 +296,19 @@ extern "C" {
* @brief Like <tt>a == b</tt>, but does evaluation and
* short-circuiting at C preprocessor time.
*
* This however only works for integer literal from 0 to 4095.
* This however only works for integer literal from 0 to 4096 (literals with U suffix,
* e.g. 0U are also included).
*
* Examples:
*
* IS_EQ(1, 1) -> 1
* IS_EQ(1U, 1U) -> 1
* IS_EQ(1U, 1) -> 1
* IS_EQ(1, 1U) -> 1
* IS_EQ(1, 0) -> 0
*
* @param a Integer literal (can be with U suffix)
* @param b Integer literal
*
*/
#define IS_EQ(a, b) Z_IS_EQ(a, b)