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RopeCache

needle_core::rope

Struct RopeCache 

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pub struct RopeCache {
    pub cos: Vec<f32>,
    pub sin: Vec<f32>,
    pub max_len: usize,
    pub half_dim: usize,
}
Expand description

Precomputed cosine/sine tables for RoPE. Shape: [max_len, head_dim/2]

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§cos: Vec<f32>§sin: Vec<f32>§max_len: usize§half_dim: usize

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impl RopeCache

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pub fn new(max_len: usize, head_dim: usize, base: f32) -> Self

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pub fn apply( &self, x: &mut [f32], seq_len: usize, num_heads: usize, head_dim: usize, offset: usize, )

Apply RoPE to a query/key tensor in-place. x: shape [seq_len, num_heads, head_dim] offset: position offset (for KV cache / decoder incremental decoding)

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