Creates macros for integers of specific widths, 8, 16, and 32 bit, signed or

unsigned.

diff --git a/citadel/typesize.h b/citadel/typesize.h
new file mode 100644 (file)
index 0000000..00b4987
--- /dev/null
+++ b/citadel/typesize.h
@@ -0,0 +1,76 @@
+/* $Id$ */
+
+/*
+   This file defines macros for 8, 16, and 32 bit integers.  The macros are:
+   cit_int8_t  default 8-bit int
+   cit_int16_t default 16-bit int
+   cit_int32_t default 32-bit int
+   cit_int64_t default 64-bit int (not implemented yet)
+   cit_sint8_t signed 8-bit int
+   cit_sint16_t        signed 16-bit int
+   cit_sint32_t        signed 32-bit int
+   cit_sint64_t        signed 64-bit int (not implemented yet)
+   cit_uint8_t unsigned 8-bit int
+   cit_uint16_t        unsigned 16-bit int
+   cit_uint32_t        unsigned 32-bit int
+   cit_uint64_t        unsigned 64-bit int (not implemented yet)
+
+   The sizes are determined during the configure process; see the 
+   AC_CHECK_SIZEOF macros in configure.in.  In no way do we assume that any
+   given datatype is any particular width, e.g. we don't assume char is one
+   byte; we check for it specifically.
+
+   This might seem excessively paranoid, but I've seen some WEIRD systems
+   and some bizarre compilers (Domain/OS for instance) in my time.
+*/
+
+#ifndef _CITADEL_UX_TYPESIZE_H
+#define _CITADEL_UX_TYPESIZE_H
+
+/* Include sysdep.h if not already included */
+#ifndef BBSDIR
+# include "sysdep.h"
+#endif
+
+/* 8-bit */
+#if SIZEOF_CHAR == 1
+# define cit_int8_t    char
+#elif SIZEOF_SHORT == 1
+# define cit_int8_t    short
+#else
+# error Unable to find an 8-bit integer datatype
+#endif
+
+/* 16-bit */
+#if SIZEOF_SHORT == 2
+# define cit_int16_t   short
+#elif SIZEOF_INT == 2
+# define cit_int16_t   int
+#elif SIZEOF_CHAR == 2
+# define cit_int16_t   char
+#else
+# error Unable to find a 16-bit integer datatype
+#endif
+
+/* 32-bit */
+#if SIZEOF_INT == 4
+# define cit_int32_t   int
+#elif SIZEOF_SHORT == 4
+# define cit_int32_t   short
+#elif SIZEOF_LONG == 4
+# define cit_int32_t   long
+#else
+# error Unable to find a 32-bit integer datatype
+#endif
+
+/* signed */
+#define cit_sint8_t    signed cit_int8_t
+#define cit_sint16_t   signed cit_int16_t
+#define cit_sint32_t   signed cit_int32_t
+
+/* unsigned */
+#define cit_uint8_t    unsigned cit_int8_t
+#define cit_uint16_t   unsigned cit_int16_t
+#define cit_uint32_t   unsigned cit_int32_t
+
+#endif /* _CITADEL_UX_TYPESIZE_H */