8000 Add domain and codomain · data-apis/array-api@4491793 · GitHub
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Add domain and codomain
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‎spec/API_specification/functions.md

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@@ -62,7 +62,7 @@ Calculates the absolute value for each element `x_i` of the input array `x` (i.e
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### <a name="acos" href="#acos">#</a> acos(x, *, out=None)
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Calculates an implementation-dependent approximation to the inverse cosine for each element `x_i` of the input array `x`. Each element-wise result is expressed in radians and ranges from `+0` to `+π`.
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Calculates an implementation-dependent approximation to the inverse cosine, having domain `[-1,+1]` and codomain `[+0, +π]`, for each element `x_i` of the input array `x`. Each element-wise result is expressed in radians.
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- If `x_i` is `NaN`, the result is `NaN`.
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- If `x_i` is greater than `1`, the result is `NaN`.

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