add a comment in l1r_lr indicating that

approx line search condition works only
if xij>=0

diff --git a/linear.cpp b/linear.cpp
index c6f716832da80536c8ef8344839d41b347aa7094..cff1188764b90872bcab30949d574ec7af4519f9 100644 (file)
--- a/linear.cpp
+++ b/linear.cpp
@@ -1494,6 +1494,7 @@ static void solve_l1r_lr(
                        {
                                cond = fabs(w[j]+d)-fabs(w[j]) - sigma*delta;
 
+                               // approx line search works only if xij>=0
                                if(x_min >= 0)
                                {
                                        double tmp = exp(d*xj_max[j]);