diff options
Diffstat (limited to 'generic/Square.c')
-rw-r--r-- | generic/Square.c | 57 |
1 files changed, 51 insertions, 6 deletions
diff --git a/generic/Square.c b/generic/Square.c index 409055d..97baee3 100644 --- a/generic/Square.c +++ b/generic/Square.c @@ -6,12 +6,32 @@ static int nn_(Square_updateOutput)(lua_State *L) { THTensor *input = luaT_checkudata(L, 2, torch_(Tensor_id)); THTensor *output = luaT_getfieldcheckudata(L, 1, "output", torch_(Tensor_id)); - - THTensor_(resizeAs)(output, input); - TH_TENSOR_APPLY2(real, output, real, input, \ - *output_data = *input_data * *input_data;); + THTensor_(resizeAs)(output, input); + + if (input->nDimension == 1 || !THTensor_(isContiguous)(input) || !THTensor_(isContiguous)(output)) + { + TH_TENSOR_APPLY2(real, output, real, input, \ + *output_data = (*input_data) * (*input_data);); + } + else + { + real* output_data = THTensor_(data)(output); + real* input_data = THTensor_(data)(input); + long k; +#pragma omp parallel for private(k) + for (k = 0; k < input->size[0]; k++) + { + real* ptr_output = output_data + k*input->stride[0]; + real* ptr_input = input_data + k*input->stride[0]; + long i; + for (i = 0; i < input->stride[0]; i++) + { + ptr_output[i] = ptr_input[i]*ptr_input[i]; + } + } + } return 1; } @@ -23,9 +43,34 @@ static int nn_(Square_updateGradInput)(lua_State *L) THTensor_(resizeAs)(gradInput, input); - TH_TENSOR_APPLY3(real, gradInput, real, gradOutput, real, input, \ - *gradInput_data = 2.0 * (*gradOutput_data) * (*input_data);); + if (input->nDimension == 1 || + !THTensor_(isContiguous)(input) || + !THTensor_(isContiguous)(gradOutput) || + !THTensor_(isContiguous)(gradInput)) + { + TH_TENSOR_APPLY3(real, gradInput, real, gradOutput, real, input, \ + *gradInput_data = (*gradOutput_data) * (*input_data);); + } + else + { + real* gradOutput_data = THTensor_(data)(gradOutput); + real* gradInput_data = THTensor_(data)(gradInput); + real* input_data = THTensor_(data)(input); + long k; +#pragma omp parallel for private(k) + for (k = 0; k < input->size[0]; k++) + { + real* ptr_gradOutput = gradOutput_data + k*input->stride[0]; + real* ptr_gradInput = gradInput_data + k*input->stride[0]; + real* ptr_input = input_data + k*input->stride[0]; + long i; + for (i = 0; i < input->stride[0]; i++) + { + ptr_gradInput[i] = 2.0 * ptr_gradOutput[i] * ptr_input[i]; + } + } + } return 1; } |