Squashed commit of the sb-vbs branch.

Includes the SD-VBS benchmarks modified to:
- Use libextra to loop as realtime jobs
- Preallocate memory before starting their main computation
- Accept input via stdin instead of via argc

Does not include the SD-VBS matlab code.

Fixes libextra execution in LITMUS^RT.

1 files changed, 55 insertions, 0 deletions

diff --git a/SD-VBS/benchmarks/stitch/src/c/matchFeatures.c b/SD-VBS/benchmarks/stitch/src/c/matchFeatures.c
new file mode 100644
index 0000000..5450eb9
--- /dev/null
+++ b/SD-VBS/benchmarks/stitch/src/c/matchFeatures.c
@@ -0,0 +1,55 @@
+/********************************
+Author: Sravanthi Kota Venkata
+********************************/
+
+#include "stitch.h"
+
+I2D* matchFeatures(F2D* vecF1, F2D* vecF2)
+{
+    int m, n, n1, n2, n1c, n2c, i, j;
+    I2D *id, *retMatch, *t;
+    F2D *val, *temp;
+    int rows, cols;    
+
+    n1 = vecF1->height;
+    n1c = vecF1->width;
+    n2 = vecF2->height;
+    n2c = vecF2->width;
+
+    retMatch = iMallocHandle(1, 2);
+
+    for(i=0; i<n1; i++)
+    {
+        id = iMallocHandle(1, n2);
+        t = iMallocHandle(1, n1c);
+
+        for(j=0; j<n1c; j++)
+            asubsref(t,j) = subsref(vecF1,i,j);
+
+        temp = dist2(t, vecF2);
+        val = fSort(temp,1);
+        id = fSortIndices(temp,1);
+
+        free(temp);
+        free(t);
+        
+        if( asubsref(val,1) != 0 & (( asubsref(val,0) / asubsref(val,1) ) < 0.65))
+        {
+            t = retMatch;
+            rows = t->height + 1;
+            cols = t->width;
+            retMatch = iMallocHandle(rows, cols);
+            n = 0;
+    
+            for(m=0; m<(t->height*t->width); m++)
+            {
+                asubsref(retMatch,n++) = asubsref(t,m);
+            }
+
+            asubsref(retMatch,n++) = i;
+            asubsref(retMatch,n) = asubsref(id,0);
+        }
+    }
+
+    return retMatch;
+}