Add Tanh

Author: lantiga

test/base.py

@@ -25,7 +25,7 @@ def base_test():
     fc3.bias.data.normal_(0.0,1.0)
 
     model_1 = lambda x: F.softmax(F.elu(fc3(x)))
-    model_2 = lambda x: F.softmax(F.elu(fc3(x)))
+    model_2 = lambda x: F.softmax(F.tanh(fc3(x)))
 
     data = Variable(torch.rand(10,10))
 

torch2c/emitters.py

@@ -429,6 +429,29 @@ def free_tpl(self):
 register(ELU, torch.nn._functions.thnn.auto.ELU)
 
 
+class Tanh(Emitter):
+
+    def __init__(self, obj, prevfns):
+        Emitter.__init__(self, obj, prevfns)
+        self.def_vars({
+            'input': id(prevfns[0]),
+        })
+        self.infer_type_var = 'input'
+
+    def call_tpl(self):
+        return '''
+            TH${T}Tensor *$id = TH${T}Tensor_new();
+            THNN_${T}Tanh_updateOutput(NULL,$input,$id);
+            '''
+
+    def free_tpl(self):
+        return '''
+            TH${T}Tensor_free($id);
+            '''
+
+register(Tanh, torch.autograd._functions.pointwise.Tanh)
+
+
 class Noop(Emitter):
 
     def __init__(self, obj, prevfns):