From: Michael Hampton <io_error@uncensored.citadel.org>
Date: Fri, 1 Sep 2000 06:49:18 +0000 (+0000)
Subject: Creates macros for integers of specific widths, 8, 16, and 32 bit, signed or
X-Git-Tag: v7.86~7124
X-Git-Url: https://code.citadel.org/?a=commitdiff_plain;h=aa2b8f26b5a25573aa97d48e280114e93fd4d87d;p=citadel.git

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
index 000000000..00b4987c6
--- /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 */