arpackmm: allow for using LA/SA magnitudes. (#402)

CHANGES

@@ -2,6 +2,7 @@ arpack-ng - 3.9.1
 
 [ Franck Houssen ]
  * [BUG FIX] Fix install: headers in /path/to/local/include/arpack
+ * arpackmm: allow for using LA/SA magnitudes.
 
  -- Franck Houssen <fghoussen@users.noreply.github.com> Sat, 11 Feb 2023 13:52:57 +0100
 

EXAMPLES/MATRIX_MARKET/arpackmm.cpp

@@ -104,7 +104,7 @@ class options {
         mag = argv[a];  // small mag (likely poor perf) <=> large mag + invert
                         // (likely good perf).
         bool ok = (mag == "LM" || mag == "SM" || mag == "LR" || mag == "SR" ||
-                   mag == "LI" || mag == "SI")
+                   mag == "LA" || mag == "SA" || mag == "LI" || mag == "SI")
                       ? true
                       : false;
         if (!ok) {
@@ -388,7 +388,7 @@ class options {
             "[dz]*upd)"
          << endl;
     cout << "  --mag M:          set magnitude of eigen values to look for "
-            "(LM, SM, LR, SR, LI, SI)."
+            "(LM, SM, LR, SR, LA, SA, LI, SI)."
          << endl;
     cout << "                    default: large magnitude (LM)" << endl;
     cout << "  --shiftReal S:    real shift where sigma = S (look for lambda+S "

EXAMPLES/MATRIX_MARKET/arpackmm.sh

@@ -11,7 +11,7 @@ for eigPb in "--A As.mtx" "--nonSymPb --A An.mtx" "--nonSymPb --cpxPb --A Az.mtx
 do
   for genPb in "" "--genPb"
   do
-    for smallMag in "" "--mag SM --noCheck" # SM is known to be difficult to converge.
+    for smallMag in "" "LA" "--mag SM --noCheck" # SM is known to be difficult to converge.
     do
       export shiftOpt=""
       if [[ "$eigPb" == *nonSymPb* ]]; then