Method sigmoid

cake-core/src/backends/cpu/mod.rs:287–298

(&self, x: &Tensor)

    }

    fn sigmoid(&self, x: &Tensor) -> Result<Tensor> {
        if x.dtype() == DType::F32 {
            let data = x.contiguous()?.flatten_all()?.to_vec1::<f32>()?;
            let shape = x.dims();
            let mut out = data;
            for v in out.iter_mut() {
                *v = 1.0 / (1.0 + (-*v).exp());
            }
            return Tensor::from_vec(out, shape, x.device());
        }
        candle_nn::ops::sigmoid(x)
    }

    fn silu(&self, x: &Tensor) -> Result<Tensor> {
        if x.dtype() == DType::F32 {