diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-02-23 16:55:15 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-02-27 11:47:48 +0200 |
| commit | 6a50c960be774b44a32f566f1f485cf800cc0527 (patch) | |
| tree | 72f079c25173e5747da75cc81e21a3ff24e3eb7b | |
| parent | 059bbcdc34e7d887ee02fdd47613bd6e0eb70d16 (diff) | |
libcamera: utils: Add to_underlying() helper function
C++23 has a std::to_underlying() helper function that converts an
enumeration value to its underlying type. Add a compatible
implementation to the libcamera::utils namespace.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
| -rw-r--r-- | include/libcamera/base/utils.h | 6 | ||||
| -rw-r--r-- | src/libcamera/base/utils.cpp | 10 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/libcamera/base/utils.h b/include/libcamera/base/utils.h index 37d9af60..922e4dfa 100644 --- a/include/libcamera/base/utils.h +++ b/include/libcamera/base/utils.h @@ -369,6 +369,12 @@ decltype(auto) abs_diff(const T &a, const T &b) double strtod(const char *__restrict nptr, char **__restrict endptr); +template<class Enum> +constexpr std::underlying_type_t<Enum> to_underlying(Enum e) noexcept +{ + return static_cast<std::underlying_type_t<Enum>>(e); +} + } /* namespace utils */ #ifndef __DOXYGEN__ diff --git a/src/libcamera/base/utils.cpp b/src/libcamera/base/utils.cpp index 3b73b442..2f4c3177 100644 --- a/src/libcamera/base/utils.cpp +++ b/src/libcamera/base/utils.cpp @@ -521,6 +521,16 @@ double strtod(const char *__restrict nptr, char **__restrict endptr) #endif } +/** + * \fn to_underlying(Enum e) + * \brief Convert an enumeration to its underlygin type + * \param[in] e Enumeration value to convert + * + * This function is equivalent to the C++23 std::to_underlying(). + * + * \return The value of e converted to its underlying type + */ + } /* namespace utils */ #ifndef __DOXYGEN__ |