【Hackathon No.56 57 58 59】sparse elementwise add sub mul div

paddle/phi/kernels/activation_kernel.h

@@ -71,6 +71,7 @@ DECLARE_ACTIVATION_KERNEL(Log1p)
 DECLARE_ACTIVATION_KERNEL(Round)
 DECLARE_ACTIVATION_KERNEL(Floor)
 DECLARE_ACTIVATION_KERNEL(Ceil)
+DECLARE_ACTIVATION_KERNEL(Opposite)
 
 DECLARE_ACTIVATION_KERNEL_WITH_ONE_ATTRS(LeakyRelu, alpha)
 DECLARE_ACTIVATION_KERNEL_WITH_ONE_ATTRS(ThresholdedRelu, threshold)

paddle/phi/kernels/cpu/activation_kernel.cc

@@ -89,6 +89,7 @@ DEFINE_CPU_ACTIVATION_KERNEL(Log1p, Log1pFunctor)
 DEFINE_CPU_ACTIVATION_KERNEL(Round, RoundFunctor)
 DEFINE_CPU_ACTIVATION_KERNEL(Floor, FloorFunctor)
 DEFINE_CPU_ACTIVATION_KERNEL(Ceil, CeilFunctor)
+DEFINE_CPU_ACTIVATION_KERNEL(Opposite, OppositeFunctor)
 
 DEFINE_CPU_ACT_KERNEL_WITH_ONE_ATTRS(LeakyRelu, LeakyReluFunctor, alpha)
 DEFINE_CPU_ACT_KERNEL_WITH_ONE_ATTRS(ThresholdedRelu,
@@ -182,6 +183,15 @@ PD_REGISTER_ACTIVATION_KERNEL(swish, SwishKernel)
 PD_REGISTER_ACTIVATION_KERNEL(round, RoundKernel)
 PD_REGISTER_ACTIVATION_KERNEL(floor, FloorKernel)
 PD_REGISTER_ACTIVATION_KERNEL(ceil, CeilKernel)
+PD_REGISTER_KERNEL(opposite,
+                   CPU,
+                   ALL_LAYOUT,
+                   phi::OppositeKernel,
+                   float,
+                   double,
+                   int16_t,
+                   int,
+                   int64_t) {}
 PD_REGISTER_ACTIVATION_KERNEL(celu, CeluKernel)
 PD_REGISTER_KERNEL(
     pow, CPU, ALL_LAYOUT, phi::PowKernel, float, double, int, int64_t) {}

paddle/phi/kernels/funcs/activation_functor.h

@@ -1814,6 +1814,14 @@ struct CeilFunctor : public BaseActivationFunctor<T> {
   }
 };
 
+template <typename T>
+struct OppositeFunctor : public BaseActivationFunctor<T> {
+  template <typename Device, typename X, typename Out>
+  void operator()(Device d, X x, Out out) const {
+    out.device(d) = -x;
+  }
+};
+
 template <typename T>
 struct ZeroGradFunctor : public BaseActivationFunctor<T> {
   template <typename Device,