Function patch_seq_env_get_float 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn patch_seq_env_get_float(
    env_data: *const Value,
    env_len: usize,
    index: i32,
) -> f64

Get a Float value from the closure environment

Returns f64 directly for efficient LLVM IR integration.

Safety

• env_data must be a valid pointer to an array of Values
• env_len must match the actual array length
• index must be in bounds [0, env_len)
• The value at index must be Value::Float