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Specify element count limit #926

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Merged
fdwr merged 1 commit into from
Mar 27, 2026
Merged

Specify element count limit #926

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11 changes: 11 additions & 0 deletions index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -1697,6 +1697,16 @@ An {{MLOperandDescriptor}} |A| is <dfn for=MLOperandDescriptor>equal</dfn> to an
1. Return |elementLength| * |elementSize|.
</details>

<details open algorithm>
<summary>
The <dfn for="MLOperandDescriptor">element count</dfn> of an {{MLOperandDescriptor}} |desc| is the value returned by the following steps:
</summary>
1. Let |elementCount| be 1.
1. [=list/For each=] |dimension| of |desc|.{{MLOperandDescriptor/shape}}:
1. Set |elementCount| to |elementCount| * |dimension|.
1. Return |elementCount|.
</details>

<p>
A <dfn>valid dimension</dfn> is an integer greater than zero and in the range of {{long}}. Implementations may impose a smaller upper bound.
</p>
Expand All @@ -1712,6 +1722,7 @@ Issue(391): Should 0-size dimensions be supported?

Issue(456): The maximum number of operand dimensions is not defined, but native ML APIs usually have a maximum supported size.

1. If |descriptor|'s [=MLOperandDescriptor/element count=] is not a [=valid dimension=], then return false.
1. If |descriptor|'s [=MLOperandDescriptor/byte length=] is not supported by the implementation, then return false.
1. Return true.
</details>
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