Changes between Initial Version and Version 1 of IntegerTypes

Timestamp:

Nov 3, 2009, 3:30:00 PM (16 years ago)

Author:

Nicolas Pouillon

Comment:

--

IntegerTypes

@@ +1 @@
+= The problem with integer types =
+
+C defines integer types `int`, `long`, `short`, `char`, `signed` or `unsigned`.
+
+These types raise numerous problems in portable code:
+ * They change size from one arch/cpu to another
+ * There is no integer type which does the size of a pointer
+
+= C99 Types =
+
+C99 defines portable fixed-size types:
+
+`[u]intXX_t` where `u` is present if unsigned, and `XX` is the size in bits. `XX` can range from 8 to 64, and is power of 2.
+
+Moreover, C99 defines:
+ * `[u]intptr_t`, which is the size of an address, thus can contain a pointer
+ * `[u]int_fastXX_t`, which are '''at least''' XX bits long, but may be larger if the larger implementation is cheaper
+ 
+= C types in MutekH =
+
+Using legacy integer types in MutekH's core code is not wanted.
+
+Default settings in configuration of the build system makes the legacy types emit a warning, or even dont compile at all.
+
+Sometimes, because you are using huge amounts of code that
+must be used without a complete rewrite, you may want to disable this
+limitation adding the following line in the configuration file:
+{{{
+CONFIG_HEXO_INTTYPES_DEPRECATED undefined
+}}}