+extern char _PDCLIB_Xdigits[];
+
+/* -------------------------------------------------------------------------- */
+/* Sanity checks */
+/* -------------------------------------------------------------------------- */
+
+#if _PDCLIB_C_VERSION >= 2011
+_Static_assert( sizeof( short ) == _PDCLIB_SHRT_BYTES, "_PDCLIB_SHRT_BYTES incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( int ) == _PDCLIB_INT_BYTES, "_PDCLIB_INT_BYTES incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( long ) == _PDCLIB_LONG_BYTES, "_PDCLIB_LONG_BYTES incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( long long ) == _PDCLIB_LLONG_BYTES, "_PDCLIB_LLONG_BYTES incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( ( (char)-1 < 0 ) == _PDCLIB_CHAR_SIGNED, "_PDCLIB_CHAR_SIGNED incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( _PDCLIB_wchar ) == sizeof( L'x' ), "_PDCLIB_wchar incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( void * ) == sizeof( _PDCLIB_intptr ), "_PDCLIB_intptr incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( sizeof( 1 ) ) == sizeof( _PDCLIB_size ), "_PDCLIB_size incorrectly defined, check _PDCLIB_config.h" );
+_Static_assert( sizeof( &_PDCLIB_digits[1] - &_PDCLIB_digits[0] ) == sizeof( _PDCLIB_ptrdiff ), "_PDCLIB_ptrdiff incorrectly defined, check _PDCLIB_config.h" );
+#endif
+
+/* -------------------------------------------------------------------------- */
+/* locale / wchar / uchar */
+/* -------------------------------------------------------------------------- */
+
+#ifndef __cplusplus
+typedef _PDCLIB_uint16_t _PDCLIB_char16_t;
+typedef _PDCLIB_uint32_t _PDCLIB_char32_t;
+#else
+typedef char16_t _PDCLIB_char16_t;
+typedef char32_t _PDCLIB_char32_t;
+#endif
+
+typedef struct _PDCLIB_mbstate {
+ union {
+ /* Is this the best way to represent this? Is this big enough? */
+ _PDCLIB_uint64_t _St64[15];
+ _PDCLIB_uint32_t _St32[31];
+ _PDCLIB_uint16_t _St16[62];
+ unsigned char _StUC[124];
+ signed char _StSC[124];
+ char _StC [124];
+ };
+
+ /* c16/related functions: Surrogate storage
+ *
+ * If zero, no surrogate pending. If nonzero, surrogate.
+ */
+ _PDCLIB_uint16_t _Surrogate;
+
+ /* In cases where the underlying codec is capable of regurgitating a
+ * character without consuming any extra input (e.g. a surrogate pair in a
+ * UCS-4 to UTF-16 conversion) then these fields are used to track that
+ * state. In particular, they are used to buffer/fake the input for mbrtowc
+ * and similar functions.
+ *
+ * See _PDCLIB_encoding.h for values of _PendState and the resultant value
+ * in _PendChar.
+ */
+ unsigned char _PendState;
+ char _PendChar;
+} _PDCLIB_mbstate_t;
+
+typedef struct _PDCLIB_locale *_PDCLIB_locale_t;
+typedef struct lconv _PDCLIB_lconv_t;
+
+_PDCLIB_size_t _PDCLIB_mb_cur_max( void );
+
+/* -------------------------------------------------------------------------- */
+/* stdio */
+/* -------------------------------------------------------------------------- */
+
+/* Position / status structure for getpos() / fsetpos(). */
+typedef struct _PDCLIB_fpos
+{
+ _PDCLIB_int_fast64_t offset; /* File position offset */
+ _PDCLIB_mbstate_t mbs; /* Multibyte parsing state */
+} _PDCLIB_fpos_t;
+
+typedef struct _PDCLIB_fileops _PDCLIB_fileops_t;
+typedef union _PDCLIB_fd _PDCLIB_fd_t;
+typedef struct _PDCLIB_file _PDCLIB_file_t; // Rename to _PDCLIB_FILE?
+
+/* Status structure required by _PDCLIB_print(). */
+struct _PDCLIB_status_t
+{
+ /* XXX This structure is horrible now. scanf needs its own */
+
+ int base; /* base to which the value shall be converted */
+ _PDCLIB_int_fast32_t flags; /* flags and length modifiers */
+ unsigned n; /* print: maximum characters to be written (snprintf) */
+ /* scan: number matched conversion specifiers */
+ unsigned i; /* number of characters read/written */
+ unsigned current;/* chars read/written in the CURRENT conversion */
+ unsigned width; /* specified field width */
+ int prec; /* specified field precision */
+
+ union {
+ void * ctx; /* context for callback */
+ const char * s; /* input string for scanf */
+ };
+
+ union {
+ _PDCLIB_size_t ( *write ) ( void *p, const char *buf, _PDCLIB_size_t size );
+ _PDCLIB_file_t *stream; /* for scanf */
+ };
+ _PDCLIB_va_list arg; /* argument stack */
+};
+
+#endif