Function is_aligned

src/fl/stl/isr/memcpy.h:22–24

@brief Check if a pointer is aligned to a specific byte boundary @param ptr Pointer to check @param alignment Alignment requirement in bytes (must be power of 2) @return true if aligned, false otherwise

/// @param alignment Alignment requirement in bytes (must be power of 2)
/// @return true if aligned, false otherwise
FASTLED_FORCE_INLINE bool is_aligned(const void* ptr, size_t alignment) {
    return (fl::ptr_to_int(ptr) & (alignment - 1)) == 0;
}

/// @brief ISR-optimized 32-bit block copy for 4-byte aligned memory
/// @param dst Destination pointer (must be 4-byte aligned)