torch.cos not implemented for LongTensor fix (#58)

test/test.py

@@ -92,7 +92,7 @@ class Test_LoadSave(unittest.TestCase):
         volume = 0.3
 
         y = (torch.cos(
-            2 * math.pi * torch.arange(0, 4 * sr) * freq / sr)).float()
+            2 * math.pi * torch.arange(0, 4 * sr).float() * freq / sr))
         y.unsqueeze_(1)
         # y is between -1 and 1, so must scale
         y = (y * volume * 2**31).long()

test/test_transforms.py

@@ -11,7 +11,7 @@ class Tester(unittest.TestCase):
     sr = 16000
     freq = 440
     volume = .3
-    sig = (torch.cos(2 * np.pi * torch.arange(0, 4 * sr) * freq / sr)).float()
+    sig = (torch.cos(2 * np.pi * torch.arange(0, 4 * sr).float() * freq / sr))
     # sig = (torch.cos((1+torch.arange(0, 4 * sr) * 2) / sr * 2 * np.pi * torch.arange(0, 4 * sr) * freq / sr)).float()
     sig.unsqueeze_(1)
     sig = (sig * volume * 2**31).long()