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, 47 insertions, 0 deletions

diff --git a/SD-VBS/benchmarks/localization/src/c/quatRot.c b/SD-VBS/benchmarks/localization/src/c/quatRot.c
new file mode 100644
index 0000000..4962b55
--- /dev/null
+++ b/SD-VBS/benchmarks/localization/src/c/quatRot.c
@@ -0,0 +1,47 @@
+/********************************
+Author: Sravanthi Kota Venkata
+********************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "localization.h"
+
+F2D* quatRot(F2D* vec, F2D* rQuat)
+{
+    F2D *ret;
+    int nr, i, j, k, rows, cols;
+    F2D *tv, *vQuat, *temp, *temp1;
+    F2D *retVec;
+
+    nr = vec->height;
+    tv = fSetArray(nr, 1, 0);
+    vQuat = fHorzcat(tv, vec);
+    temp = quatMul(rQuat, vQuat);
+    temp1 = quatConj(rQuat);
+    retVec = quatMul(temp, temp1);
+
+    rows = retVec->height;
+    cols = retVec->width;
+
+    ret = fSetArray(rows, 3, 0);
+
+    for(i=0; i<rows; i++)
+    {
+        k = 0;
+        for(j=1; j<4; j++)
+        {
+            subsref(ret,i,k) = subsref(retVec,i,j);
+            k++;
+        }
+    }
+
+    fFreeHandle(tv);
+    fFreeHandle(vQuat);
+    fFreeHandle(temp);
+    fFreeHandle(temp1);
+    fFreeHandle(retVec);
+        
+    return ret;
+}
+
+