2 files changed, 19 insertions, 0 deletions
diff --git a/tests/matrix_test.cu b/tests/matrix_test.cu
index 5c88a92..99e13dc 100644
--- a/tests/matrix_test.cu
+++ b/tests/matrix_test.cu
@@ -35,6 +35,11 @@ __global__ void inv(float *a, float *dest)
 	matrix2array(inv(m), dest);
 }
 
+__global__ void minusmatrix(float *a, float *dest)
+{
+	matrix2array(-array2matrix(a), dest);
+}
+
 __global__ void matrixadd(float *a, float *b, float *dest)
 {
 	matrix2array(array2matrix(a)+array2matrix(b), dest);
diff --git a/tests/matrix_test.py b/tests/matrix_test.py
index 412acf9..bc4115e 100644
--- a/tests/matrix_test.py
+++ b/tests/matrix_test.py
@@ -34,6 +34,7 @@ matrixsubequalsfloat = mod.get_function('matrixsubequalsfloat')
 matrixmulequalsfloat = mod.get_function('matrixmulequalsfloat')
 matrixdivequalsfloat = mod.get_function('matrixdivequalsfloat')
 outer = mod.get_function('outer')
+minusmatrix = mod.get_function('minusmatrix')
 
 size = {'block': (1,1,1), 'grid': (1,1)}
 
@@ -308,3 +309,16 @@ for i in range(1):
         print dest
     else:
         print 'success'
+
+    print 'testing minus matrix...',
+
+    dest = np.copy(a)
+
+    minusmatrix(cuda.In(a), cuda.Out(dest), **size)
+
+    if not np.allclose(-a, dest):
+        print 'fail'
+        print -a
+        print dest
+    else:
+        print 'success'