1use crate::bindings::{new_svp_ppol, svp_apply_dft, svp_prepare};
 2use crate::scalar::Scalar;
 3use crate::{Module, SvpPPol, VecZnx, VecZnxDft};
 4
 5impl Module {
 6    // Prepares a scalar polynomial (1 limb) for a scalar x vector product.
 7    // Method will panic if a.limbs() != 1.
 8    pub fn svp_prepare(&self, svp_ppol: &mut SvpPPol, a: &Scalar) {
 9        unsafe { svp_prepare(self.0, svp_ppol.0, a.as_ptr()) }
10    }
11
12    // Allocates a scalar-vector-product prepared-poly (VecZnxBig).
13    pub fn svp_new_ppol(&self) -> SvpPPol {
14        unsafe { SvpPPol(new_svp_ppol(self.0)) }
15    }
16
17    // Applies a scalar x vector product: res <- a (ppol) x b
18    pub fn svp_apply_dft(&self, c: &mut VecZnxDft, a: &SvpPPol, b: &VecZnx) {
19        let limbs: u64 = b.limbs() as u64;
20        assert!(
21            c.limbs() as u64 >= limbs,
22            "invalid c_vector: c_vector.limbs()={} < b.limbs()={}",
23            c.limbs(),
24            limbs
25        );
26        unsafe { svp_apply_dft(self.0, c.0, limbs, a.0, b.as_ptr(), limbs, b.n() as u64) }
27    }
28}