_sys_close()

Defined in rt_sys.h, this function closes a file previously opened with _sys_open().

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int _sys_close(FILEHANDLE fh);

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This function must be defined if any input/output function is to be used.

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The return value is 0 if successful. A nonzero value indicates an error.

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Reference

ARM C and C++ Libraries and Floating-Point Support User Guide:

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