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16 lines
551 B
16 lines
551 B
9 years ago
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define: DUK_USE_DATAPTR_ENC16
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introduced: 1.1.0
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requires:
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- DUK_USE_DATAPTR16
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default: false
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tags:
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- lowmemory
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- experimental
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description: >
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Use together with DUK_USE_DATAPTR16 for arbitrary data pointer compression.
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DUK_USE_DATAPTR_ENC16(udata,p) is a macro with a userdata and void ptr
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argument, and a duk_uint16_t return value. The userdata argument is the
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heap userdata value given at heap creation. Currently it is required that
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NULL encodes to integer 0, and integer 0 decodes to NULL. No other pointer
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can be encoded to 0.
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