TASKING VX-toolset for ARM User Guide

TASKING VX-toolset for ARM User GuideFunctiontowuppertrunc truncf trunclungetc ungetwcunlinkvfprintf vfwprintfvfscanf vfwscanfvprintf vwprintfvscanf vwscanfvsprintf vswprintfvsscanf vswscanfwcrtombwcsrtombswcstoimaxwcstombswcstoumaxwctobwctombwctranswctypewriteNot reentrant because-(Not implemented)Uses static buffer to hold unget characters for each file. Can bemoved into iob structure. See (1).Uses global File System Simulation buffer, _dbg_requestUses iob[ ]. See (1).Calls _doscanUses iob[ ]. See (1).Calls _doscanSets errno.Sets errno.Sets errno.Sets errno.Sets errno via calls to other functions.N.A.; skeleton functionSets errno via calls to other functions.-N.A.; skeleton function--Calls _writeTable: C library reentrancySeveral functions in the C library are not reentrant due to the following reasons:• The iob[] structure is static. This influences all I/O functions.• The ungetc[] array is static. This array holds the characters (one for each stream) when ungetc()is called.• The variable errno is globally defined. Numerous functions read or modify errno• _doprint and _doscan use static variables for e.g. character counting in strings.• Some string functions use locally defined (static) buffers. This is prescribed by ANSI.• malloc uses a static heap space.The following description discusses these items in more detail. The numbers at the beginning of eachparagraph relate to the number references in the table above.(1) iob structures782