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Add support for "sign" on tensors (#2012)

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* add the sign unary operator

* remove uneeded import

* remove uneeded import

* undo formatting

* undo formatting

* remove unnecessary redefintion

* allow gradient to flow through for sign and round

* fix cpu ops to ensure that negzero and positive zero are handled properly

* clippy fixes

* Properly avoid gradient tracking.

* Use a branchless version.

---------

Co-authored-by: laurent <laurent.mazare@gmail.com>
This commit is contained in:
Thomas Santerre
2024-04-04 16:32:47 -04:00
committed by GitHub
parent e6a5b82ba6
commit c5626b8271
8 changed files with 69 additions and 11 deletions
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4
candle-core/src/metal_backend/mod.rs
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@ -497,6 +497,10 @@ impl BackendStorage for MetalStorage {
("utanh", DType::F16) => contiguous::tanh::HALF,
("utanh", DType::F32) => contiguous::tanh::FLOAT,
("utanh", DType::BF16) => contiguous::tanh::BFLOAT,
("usign", DType::F16) => contiguous::sign::HALF,
("usign", DType::F32) => contiguous::sign::FLOAT,
("usign", DType::BF16) => contiguous::sign::BFLOAT,
("usign", DType::I64) => contiguous::sign::I64,
(name, dtype) => {
crate::bail!("Metal contiguous unary {name} {dtype:?} not implemented")
}