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#ifndef TH_GENERIC_FILE
#define TH_GENERIC_FILE "generic/SoftPlus.c"
#else
static int nn_(SoftPlus_updateOutput)(lua_State *L)
{
THTensor *input = luaT_checkudata(L, 2, torch_Tensor);
THTensor *output = luaT_getfieldcheckudata(L, 1, "output", torch_Tensor);
THTensor_(resizeAs)(output, input);
TH_TENSOR_APPLY2(real, output, real, input, \
*output_data = THLog1p(exp(*input_data));)
return 1;
}
static int nn_(SoftPlus_updateGradInput)(lua_State *L)
{
THTensor *gradOutput = luaT_checkudata(L, 3, torch_Tensor);
THTensor *output = luaT_getfieldcheckudata(L, 1, "output", torch_Tensor);
THTensor *gradInput = luaT_getfieldcheckudata(L, 1, "gradInput", torch_Tensor);
THTensor_(resizeAs)(gradInput, output);
TH_TENSOR_APPLY3(real, gradInput, real, gradOutput, real, output, \
real z = exp(*output_data); \
*gradInput_data = *gradOutput_data * (z - 1.)/z;)
return 1;
}
static const struct luaL_Reg nn_(SoftPlus__) [] = {
{"SoftPlus_updateOutput", nn_(SoftPlus_updateOutput)},
{"SoftPlus_updateGradInput", nn_(SoftPlus_updateGradInput)},
{NULL, NULL}
};
static void nn_(SoftPlus_init)(lua_State *L)
{
luaT_pushmetatable(L, torch_Tensor);
luaT_registeratname(L, nn_(SoftPlus__), "nn");
lua_pop(L,1);
}
#endif
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