Commit 16ef60fb authored by Damien George's avatar Damien George
Browse files

Updated CODECONVENTIONS to clarify use of integer types.

parent b0261341
......@@ -40,6 +40,17 @@ Header files:
Type names and declarations:
- When defining a type, put '_t' after it.
Integer types: Micro Python runs on 32 and 64 bit machines (and one day
maybe 16 bit), so it's important to use the correctly-sized (and signed)
integer types. The general guidelines are:
- For most cases use mp_int_t for signed and mp_uint_t for unsigned
integer values. These are guaranteed to be machine-word sized and
therefore big enough to hold the value from a Micro Python small-int
object.
- Use size_t for things that count bytes / sizes of objects.
- You can use int/uint, but remember that they may be 16-bits wide.
- If in doubt, use mp_int_t/mp_uint_t.
Examples
--------
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