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On-Line Manuals RealView Libraries and Floating Point Support Guide | Thumb C libraries
The linker automatically links in the Thumb C library if it detects that one or more of the objects to be linked have been built for:
Despite its name, the Thumb C library might not contain exclusively Thumb code, but might use ARM instructions if they are available for critical functions, such as NoteThe Thumb C library used for ARMv6-M targets contains only Thumb-1 code. The Thumb C library used for ARMv7‑M targets contains only Thumb‑2 code. See Chapter 2 The C and C++ Libraries for more information. | ||||||||||||
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