test gemm.perform on complex type. It's c_code don't support complex.

theano/tensor/tests/test_blas.py

@@ -49,7 +49,13 @@ class t_gemm(TestCase):
     def rand(*args):
         return numpy.random.rand(*args)
 
-    def cmp(self, z, a, x, y, b):
+    def cmp(self, z_, a_, x_, y_, b_):
+        for dtype in ['float32', 'float64', 'complex64', 'complex128']:
+            z = numpy.asarray(z_, dtype=dtype)
+            a = numpy.asarray(a_, dtype=dtype)
+            x = numpy.asarray(x_, dtype=dtype)
+            y = numpy.asarray(y_, dtype=dtype)
+            b = numpy.asarray(b_, dtype=dtype)
             def cmp_linker(z, a, x, y, b, l):
                 z,a,x,y,b = [numpy.asarray(p) for p in z,a,x,y,b]
                 z_orig = z.copy()
@@ -69,7 +75,7 @@ class t_gemm(TestCase):
 
             cmp_linker(copy(z), a, x, y, b, 'c|py')
             cmp_linker(copy(z), a, x, y, b, 'py')
-        if config.blas.ldflags:
+            if config.blas.ldflags and not dtype.startswith("complex"):
                 # If blas.ldflags is equal to '', the C code will not be generated
                 cmp_linker(copy(z), a, x, y, b, 'c')