fix HagerZhang bug

JuliaNLSolvers · Nov 1, 2018 · a4ab100 · a4ab100
1 parent 582ed2f
commit a4ab100
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/hagerzhang.jl b/src/hagerzhang.jl
@@ -191,7 +191,7 @@ function (ls::HagerZhang)(ϕ, ϕdϕ,
             # The value is higher, but the slope is downward, so we must
             # have crested over the peak. Use bisection.
             ib = length(alphas)
-            ia = ib - 1
+            ia = 1
             if c ≉  alphas[ib] || slopes[ib] >= zeroT
                 error("c = ", c)
             end