Function softmax_pdf_floor_inplace 

pub fn softmax_pdf_floor_inplace(
    logits: &[f32],
    vocab_size: usize,
    pdf_out: &mut [f64],
)

In-place version of softmax_pdf_floor to avoid allocations.

Arguments

• logits - Raw logits from the model
• vocab_size - Size of the vocabulary
• pdf_out - Pre-allocated buffer for output PDF (length >= vocab_size)