15 lines
536 B
YAML
15 lines
536 B
YAML
|
define: DUK_OPT_DATAPTR_ENC16
|
||
|
introduced: 1.1.0
|
||
|
requires:
|
||
|
- DUK_OPT_DATAPTR16
|
||
|
tags:
|
||
|
- lowmemory
|
||
|
- experimental
|
||
|
description: >
|
||
|
Use together with DUK_OPT_DATAPTR16 for arbitrary data pointer compression.
|
||
|
DUK_OPT_DATAPTR_ENC16(udata,p) is a macro with a userdata and void ptr
|
||
|
argument, and a duk_uint16_t return value. The userdata argument is the
|
||
|
heap userdata value given at heap creation. Currently it is required that
|
||
|
NULL encodes to integer 0, and integer 0 decodes to NULL. No other pointer
|
||
|
can be encoded to 0.
|