""

1 files changed, 81 insertions, 0 deletions

diff --git a/integers.h b/integers.h
new file mode 100644
index 0000000..f6171e4
--- /dev/null
+++ b/integers.h
@@ -0,0 +1,81 @@
+/*
+ * integers.h:
+ * This header file ensures that we have u_int<n>_t types of the proper width,
+ * using a rather convoluted set of conditionals generated by configure. This
+ * is an almighty pain in the arse, and is completely irrelevant on most
+ * systems which already define this stuff.
+ *
+ * $Id$
+ *
+ */
+
+#ifndef __INTEGERS_H_ /* include guard */
+#define __INTEGERS_H_
+
+#include <sys/types.h>
+#include "config.h"
+
+#if SIZEOF_U_INT8_T != 1 || SIZEOF_U_INT16_T != 2 || SIZEOF_U_INT32_T != 4
+
+#   if defined(HAVE_C99_INTS)
+        
+        /* 
+         * Use the C99 standard-width integers, defined in some appropriate
+         * header file.
+         */
+
+#       if defined(HAVE_STDINT_H)
+#           include <stdint.h>
+#       elif defined(HAVE_SYS_INTTYPES_H)
+#           include <sys/inttypes.h>
+#       endif
+
+        /* Don't replace existing u_int<n>_t types. */
+#       if SIZEOF_U_INT8_T != 1
+            typedef uint8_t u_int8_t;
+#       endif
+
+#       if SIZEOF_U_INT16_T != 2
+            typedef uint16_t u_int16_t;
+#       endif
+
+#       if SIZEOF_U_INT32_T != 4
+            typedef uint32_t u_int32_t;
+#       endif
+
+#   elif (SIZEOF_UNSIGNED_SHORT_INT == 2 || SIZEOF_UNSIGNED_INT == 2)    \
+          && (SIZEOF_UNSIGNED_INT == 4 || SIZEOF_UNSIGNED_LONG_INT == 4)
+    
+        /*
+         * Use an appropriately-sized basic type.
+         */
+    
+#       if SIZEOF_U_INT8_T != 1
+            typedef unsigned char u_int8_t;         /* By definition. */
+#       endif
+
+#       if SIZEOF_U_INT16_T != 2
+#           if SIZEOF_UNSIGNED_SHORT_INT == 2
+                typedef unsigned short int u_int16_t;
+#           elif SIZEOF_UNSIGNED_INT == 2
+                typedef unsigned int u_int16_t;     /* Not likely. */
+#           endif
+#       endif
+
+#       if SIZEOF_U_INT32_T != 4
+#           if SIZEOF_UNSIGNED_INT == 4
+                typedef unsigned int u_int32_t;
+#           elif SIZEOF_UNSIGNED_LONG_INT == 4
+                typedef unsigned long int u_int32_t;
+#           endif
+#       endif
+
+        /* Whew. */
+
+#   else
+#       error "Your C compiler seems to lack 16 and 32 bit unsigned integer types"
+#   endif
+
+#endif /* No existing u_int<n>_t types. */
+
+#endif /* __INTEGERS_H_ */