From 1c7daec95759171e69d82f868f4bcf411cf6263e Mon Sep 17 00:00:00 2001
From: zeefaad <zefad83@gmail.com>
Date: Thu, 12 Feb 2026 12:32:46 +0100
Subject: [PATCH] generer H avec k

---
 Code/ldpc/src/construction/random.rs | 18 ++++++++++++++++++
 Code/ldpc/src/encoder/dense.rs       |  1 +
 2 files changed, 19 insertions(+)

diff --git a/Code/ldpc/src/construction/random.rs b/Code/ldpc/src/construction/random.rs
index 70841e3..88139c5 100644
--- a/Code/ldpc/src/construction/random.rs
+++ b/Code/ldpc/src/construction/random.rs
@@ -33,3 +33,21 @@ pub fn generate_random_h(rows: usize, cols: usize, wc: usize, wr: usize) -> Matr
         }
     }
 }
+
+pub fn generate_random_h_for_k(k: usize, wc: usize, wr: usize) -> MatrixGF2 {
+    assert!(wr > wc, "wr < wc ...");
+    assert!((k * wr) % (wr - wc) == 0, "Colonnes non entieres");
+
+    let n = (k * wr) / (wr - wc);
+    let m = n - k;
+
+    // On garde que les matrice de rang m
+    loop {
+        let h_matrix = generate_random_h(m, n, wc, wr);
+        let mut h_test = h_matrix.clone();
+        let (rank, _) = h_test.gauss_jordan_swap_cols();
+        if rank == m {
+            return h_matrix;
+        }
+    }
+}
diff --git a/Code/ldpc/src/encoder/dense.rs b/Code/ldpc/src/encoder/dense.rs
index c04920e..3c35792 100644
--- a/Code/ldpc/src/encoder/dense.rs
+++ b/Code/ldpc/src/encoder/dense.rs
@@ -41,6 +41,7 @@ impl DenseEncoder {
         // let mut codeword = vec![0; self.n];
 
         // s = u * G
+
         // for c in 0..self.n {
         //     let mut sum = 0;
         //     for r in 0..self.k {