Merge pull request #8 from dhuth/master

w/ python test suite

1 files changed, 44 insertions, 0 deletions

diff --git a/test-chill/test-cases/examples/chill/qr.c b/test-chill/test-cases/examples/chill/qr.c
new file mode 100644
index 0000000..8d18b72
--- /dev/null
+++ b/test-chill/test-cases/examples/chill/qr.c
@@ -0,0 +1,44 @@
+#include <math.h>
+
+int main() {
+
+	int M, N;
+	float** A;
+	float *s;
+	float *Rdiag;
+	float *nrm;
+	int i, j, k;
+        float t;
+	for (k = 0; k < N; k++) {
+		nrm[k] = 0;
+
+		for (i = k; i < M; i++)
+			nrm[k] = sqrt(nrm[k] * nrm[k] + A[i][k] * A[i][k]);
+                //t = A[k][k];
+
+		//if (t < 0)
+		//	nrm[k] = -nrm[k];
+		for (i = k; i < M; i++)
+			A[i][k] = A[i][k] / nrm[k];
+
+		A[k][k] = A[k][k] + 1;
+
+		for (j = k + 1; j < N; j++) {
+			s[j] = 0; //S6
+
+			for (i = k; i < M; i++)
+				s[j] = s[j] + A[i][k] * A[i][j]; //S7
+
+			s[j] = -s[j] / A[k][k]; //S8
+
+			for (i = k; i < M; i++)
+				A[i][j] = A[i][j] + s[j] * A[i][k]; //S9
+
+		}
+
+		Rdiag[k] = -nrm[k];
+
+	}
+
+	return 0;
+}