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_sys_tmpnam()

Defined in rt_sys.h, this function converts the file number fileno for a temporary file to a unique filename, for example, tmp0001.

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void _sys_tmpnam(char *name, int fileno, unsigned maxlength);

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The function must be defined if tmpnam() or tmpfile() is used.

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Returns the filename in name.

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Reference

Using ARM® C and C++ Libraries and Floating-Point Support:

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