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30 lines
945 B
Rust
30 lines
945 B
Rust
use candle::Tensor;
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use serde::Deserialize;
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#[derive(Debug, Clone, Copy, PartialEq, Deserialize, Default)]
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#[serde(rename_all = "lowercase")]
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pub enum Activation {
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#[default]
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Gelu,
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#[serde(rename = "gated-gelu")]
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NewGelu,
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Relu,
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Elu(f64),
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LeakyRelu(f64),
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}
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impl super::Module for Activation {
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fn forward(&self, xs: &Tensor) -> candle::Result<Tensor> {
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match self {
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Self::Gelu => xs.gelu(),
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// TODO: This is "gelu_new", not the original "gelu".
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// There's some small numerical difference:
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// https://github.com/huggingface/transformers/blob/12f043eaeaabfef6f6efea411d98e6f6d3c094b7/src/transformers/activations.py#L49-L78
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Self::NewGelu => xs.gelu(),
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Self::Relu => xs.relu(),
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&Self::Elu(alpha) => xs.elu(alpha),
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&Self::LeakyRelu(negative_slope) => crate::ops::leaky_relu(xs, negative_slope),
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}
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}
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}
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