Page Comparison

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                      fs_size_t   nitems,

                      FS_FILE    *p_file);

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Number of items written.

Notes/Warnings

• The size or nitems is 0, then the file is unchanged and zero is returned.
• If the file is buffered and the last operation is input (read), then a call to fs_fsetpos() or fs_fseek() must occur before output (write can be performed unless the end-of-file was encountered.
• The file must have been opened in write or update (read/write) mode.
• If the file was opened in append mode, all writes are forced to the end-of-file.