gcc-msp430-ti-toolchain-5.01.02.00 und float bei printf..

--enable-newlib-nano-formatted-io'

     This builds NEWLIB with a special implementation of formatted I/O

     functions, designed to lower the size of application on small systems

     with size constraint issues.  This option does not affect wide-char

     formatted I/O functions.  Some notes about the feature:

      1) The non-wide-char formatted I/O functions only support the C89

         standard.  The only exception is the configuration option provides

         limited support for long double.  Internally, the nano formatted I/O

         functions use double so accuracy is only guaranteed to double

         precision.

      2) Floating-point support is split out of the formatted I/O code into

         weak functions which are not linked by default.  Programs that need

         floating-point I/O support must explicitly request linking of one or

         both of the floating-point functions: _printf_float or _scanf_float.

         This can be done at link time using the -u option which can be passed

         to either gcc or ld.  The -u option forces the link to resolve those

         function references.  Floating-point format specifiers are recognized

         by default, but if the floating-point functions are not explicitly

         linked in, this may result in undefined behavior for programs that

         need floating-point I/O support.

      3) Integer-only versions of the formatted I/O functions (the iprintf/

         iscanf family) simply alias their regular counter-parts.

         The affected functions are:

          diprintf vdiprintf

          siprintf fiprintf iprintf sniprintf asiprintf asniprintf

          siscanf fiscanf iscanf

          viprintf vfiprintf vsiprintf vsniprintf vasiprintf vasniprintf

          viscanf vfiscanf vsiscanf

          _diprintf_r _vdiprintf_r

          _siprintf_r _fiprintf_r _iprintf_r _sniprintf_r _asiprintf_r

          _asniprintf_r

          _siscanf_r _fiscanf_r _iscanf_r

          _viprintf_r _vfiprintf_r _vsiprintf_r _asniprintf_r _vasiprintf_r

          _vasniprintf_r

          _viscanf_r _vfiscanf_r _vsiscanf_r