4.4. Tailoring the C library to a new execution environment

This section describes how to re-implement functions to produce an application for a different execution environment, for example embedded in ROM or used with an RTOS.

Symbols that have a single or double underscore, _ or __, name functions that are used as part of the low-level implementation. You can re-implement some of these functions.

Additional information on these library functions is available in the rt_heap.h, rt_locale.h, rt_misc.h, and rt_sys.h include files and the rt_memory.s assembler file.

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