Whitespace cleanups.

[pdclib] / internals / _PDCLIB_int.h

diff --git a/internals/_PDCLIB_int.h b/internals/_PDCLIB_int.h
index 2d99b911a5b1e3c78b0d59cf5570fb7eb7417c43..e449e2db53b6c9cae3ccb90eee17ee3a501912d5 100644 (file)
--- a/internals/_PDCLIB_int.h
+++ b/internals/_PDCLIB_int.h
@@ -1,25 +1,19 @@
-/* $Id$ */
-
 /* 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
@@ -263,7 +257,7 @@ typedef unsigned _PDCLIB_intmax _PDCLIB_uintmax_t;
 */
 #define _PDCLIB_FREAD     8u
 #define _PDCLIB_FWRITE   16u
-#define _PDCLIB_FAPPEND  32u 
+#define _PDCLIB_FAPPEND  32u
 #define _PDCLIB_FRW      64u
 #define _PDCLIB_FBIN    128u
 
@@ -386,7 +380,7 @@ const char * _PDCLIB_scan( const char * spec, struct _PDCLIB_status_t * status )
 /* 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.
@@ -407,25 +401,17 @@ void _PDCLIB_closeall( void );
 /* 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                                                    */
@@ -450,3 +436,22 @@ struct _PDCLIB_ctype_t
     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