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[GCC][Clang] Add missing macro for __builtin_clzll function - #75

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JohnMega:Add-missing-macro-for-__builtin_clzll-function
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JohnMega:Add-missing-macro-for-__builtin_clzll-function

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There is a __CLZ macro for the __builtin_clz function, which counts the number of leading zeros in a 32-bit unsigned integer. But for some reason, the macro for the __builtin_clzll function, which counts the number of leading zeros in a 64-bit unsigned integer is missing.

@ALABSTM ALABSTM self-assigned this Sep 18, 2026
@ALABSTM ALABSTM added enhancement New feature or request cmsis CMSIS-related issue or pull-request. labels Sep 18, 2026
@ALABSTM ALABSTM moved this from In progress to To do in stm32cube-mcu-cmsis-dashboard Sep 18, 2026
@ALABSTM ALABSTM assigned ASAHSTM and unassigned ALABSTM Sep 18, 2026
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cmsis CMSIS-related issue or pull-request. enhancement New feature or request

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