-/* $Id$ */
-
/* PDCLib internal integer logic <_PDCLIB_int.h>
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
+#ifndef _PDCLIB_INT_H
+#define _PDCLIB_INT_H _PDCLIB_INT_H
+
/* -------------------------------------------------------------------------- */
/* You should not have to edit anything in this file; if you DO have to, it */
/* would be considered a bug / missing feature: notify the author(s). */
/* -------------------------------------------------------------------------- */
-#ifndef _PDCLIB_CONFIG_H
-#define _PDCLIB_CONFIG_H _PDCLIB_CONFIG_H
-#include <_PDCLIB_config.h>
-#endif
-
-#ifndef _PDCLIB_AUX_H
-#define _PDCLIB_AUX_H _PDCLIB_AUX_H
-#include <_PDCLIB_aux.h>
-#endif
+#include "_PDCLIB_config.h"
+#include "_PDCLIB_aux.h"
/* null pointer constant */
#define _PDCLIB_NULL 0
*/
#define _PDCLIB_FREAD 8u
#define _PDCLIB_FWRITE 16u
-#define _PDCLIB_FAPPEND 32u
+#define _PDCLIB_FAPPEND 32u
#define _PDCLIB_FRW 64u
#define _PDCLIB_FBIN 128u
/* Parsing any fopen() style filemode string into a number of flags. */
unsigned int _PDCLIB_filemode( const char * mode );
-/* Sanity checking and preparing of read buffer, should be called first thing
+/* Sanity checking and preparing of read buffer, should be called first thing
by any stdio read-data function.
Returns 0 on success, EOF on error.
On error, EOF / error flags and errno are set appropriately.
/* 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;
-int * _PDCLIB_errno_func( void );
-/* ERANGE and EDOM are specified by the standard. */
-#define _PDCLIB_ERANGE 1
-#define _PDCLIB_EDOM 2
-/* Used in the example implementation for any kind of I/O error. */
-#define _PDCLIB_EIO 3
-/* Used in the example implementation for "unknown error". */
-#define _PDCLIB_EUNKNOWN 4
-/* Used in the example implementation for "invalid parameter value". */
-#define _PDCLIB_EINVAL 5
-/* Used in the example implementation for "I/O retries exceeded". */
-#define _PDCLIB_ERETRY 6
-/* One larger than the largest used errno */
-#define _PDCLIB_EMAX 7
-
-/* TODO: Doing this via a static array is not the way to do it. */
-char const * _PDCLIB_errno_texts[ _PDCLIB_EMAX ];
+/* A mechanism for delayed evaluation. (Not sure if this is really necessary, so
+ no detailed documentation on the "why".)
+*/
+int * _PDCLIB_errno_func( void );
/* -------------------------------------------------------------------------- */
/* <ctype.h> lookup tables */
unsigned char collation;
};
+/* -------------------------------------------------------------------------- */
+/* Configuration asserts */
+/* -------------------------------------------------------------------------- */
+
+_PDCLIB_static_assert( _PDCLIB_CHAR_BIT == 8, "CHAR_BIT != 8 not supported." );
+
+_PDCLIB_static_assert( sizeof( short ) == _PDCLIB_SHRT_BYTES, "Compiler disagrees on _PDCLIB_SHRT_BYTES." );
+_PDCLIB_static_assert( sizeof( int ) == _PDCLIB_INT_BYTES, "Compiler disagrees on _PDCLIB_INT_BYTES." );
+_PDCLIB_static_assert( sizeof( long ) == _PDCLIB_LONG_BYTES, "Compiler disagrees on _PDCLIB_LONG_BYTES." );
+_PDCLIB_static_assert( sizeof( long long ) == _PDCLIB_LLONG_BYTES, "Compiler disagrees on _PDCLIB_LLONG_BYTES." );
+
+_PDCLIB_static_assert( ( (char)-1 < 0 ) == _PDCLIB_CHAR_SIGNED, "Compiler disagrees on _PDCLIB_CHAR_SIGNED." );
+_PDCLIB_static_assert( sizeof( sizeof( int ) ) == sizeof( _PDCLIB_size ), "Compiler disagrees on _PDCLIB_size." );
+
+int _PDCLIB_assert_array[2];
+
+_PDCLIB_static_assert( sizeof( &_PDCLIB_assert_array[1] - &_PDCLIB_assert_array[0] ) == sizeof( _PDCLIB_ptrdiff ), "Compiler disagrees on _PDCLIB_ptrdiff." );
+
+#endif