+#define _PDCLIB_INTMAX_MIN _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_INTMAX ), _MIN )
+#define _PDCLIB_INTMAX_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_, _PDCLIB_INTMAX ), _MAX )
+#define _PDCLIB_UINTMAX_MAX _PDCLIB_concat( _PDCLIB_concat( _PDCLIB_U, _PDCLIB_INTMAX ), _MAX )
+#define _PDCLIB_INTMAX_C( value ) _PDCLIB_concat( value, _PDCLIB_INTMAX_LITERAL )
+#define _PDCLIB_UINTMAX_C( value ) _PDCLIB_concat( value, _PDCLIB_concat( u, _PDCLIB_INTMAX_LITERAL ) )
+
+/* -------------------------------------------------------------------------- */
+/* Various <time.h> internals */
+/* -------------------------------------------------------------------------- */
+
+typedef _PDCLIB_time _PDCLIB_time_t;
+typedef _PDCLIB_clock _PDCLIB_clock_t;
+
+#if !defined(_PDCLIB_DEFINE_STRUCT_TIMESPEC)
+#define _PDCLIB_DEFINE_STRUCT_TIMESPEC() \
+ struct timespec { \
+ time_t tv_sec; \
+ long tv_nsec; \
+ };
+#endif
+
+#if !defined(_PDCLIB_DEFINE_STRUCT_TM)
+#define _PDCLIB_DEFINE_STRUCT_TM() \
+ struct tm { \
+ int tm_sec; \
+ int tm_min; \
+ int tm_hour; \
+ int tm_mday; \
+ int tm_mon; \
+ int tm_year; \
+ int tm_wday; \
+ int tm_yday; \
+ int tm_isdst; \
+ };
+#endif
+
+/* -------------------------------------------------------------------------- */
+/* Internal data types */
+/* -------------------------------------------------------------------------- */
+
+/* Structure required by both atexit() and exit() for handling atexit functions */
+struct _PDCLIB_exitfunc_t
+{
+ struct _PDCLIB_exitfunc_t * next;
+ void (*func)( void );
+};
+
+/* -------------------------------------------------------------------------- */
+/* Declaration of helper functions (implemented in functions/_PDCLIB). */
+/* -------------------------------------------------------------------------- */
+
+/* This is the main function called by atoi(), atol() and atoll(). */
+_PDCLIB_intmax_t _PDCLIB_atomax( const char * s );
+
+/* Two helper functions used by strtol(), strtoul() and long long variants. */
+const char * _PDCLIB_strtox_prelim( const char * p, char * sign, int * base );
+_PDCLIB_uintmax_t _PDCLIB_strtox_main( const char ** p, unsigned int base, _PDCLIB_uintmax_t error, _PDCLIB_uintmax_t limval, int limdigit, char * sign );
+
+/* Digits arrays used by various integer conversion functions */
+extern char _PDCLIB_digits[];
+extern char _PDCLIB_Xdigits[];
+
+/* -------------------------------------------------------------------------- */
+/* errno */
+/* -------------------------------------------------------------------------- */
+
+/* If PDCLib would call its error number "errno" directly, there would be no way
+ to catch its value from underlying system calls that also use it (i.e., POSIX
+ operating systems). That is why we use an internal name, providing a means to
+ access it through <errno.h>.
+*/
+extern int _PDCLIB_errno;
+
+/* A mechanism for delayed evaluation. (Not sure if this is really necessary, so
+ no detailed documentation on the "why".)
+*/
+int * _PDCLIB_errno_func( void ) _PDCLIB_nothrow;
+
+/* -------------------------------------------------------------------------- */
+/* locale / wchar / uchar */
+/* -------------------------------------------------------------------------- */
+
+#ifndef __cplusplus
+typedef _PDCLIB_int16_t _PDCLIB_char16_t;
+typedef _PDCLIB_int32_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_charcodec *_PDCLIB_charcodec_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
+{
+ 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 */
+ /* scan: number matched conversion specifiers */
+ unsigned i; /* number of characters read/written */
+ unsigned current;/* chars read/written in the CURRENT conversion */
+ char * s; /* *sprintf(): target buffer */
+ /* *sscanf(): source string */
+ unsigned width; /* specified field width */
+ int prec; /* specified field precision */
+ _PDCLIB_file_t * stream; /* *fprintf() / *fscanf() stream */
+ _PDCLIB_va_list arg; /* argument stack */
+};
+
+#endif