| // Copyright 2019 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <xnnpack/argmaxpool.h> |
| #include <xnnpack/math.h> |
| |
| |
| void xnn_f32_argmaxpool_ukernel_4x__scalar_c1( |
| size_t output_pixels, |
| size_t pooling_elements, |
| size_t channels, |
| const float** input, |
| size_t input_offset, |
| float* output, |
| uint32_t* index, |
| size_t input_increment, |
| size_t output_increment, |
| const union xnn_f32_output_params params[restrict static 1]) |
| { |
| assert(output_pixels != 0); |
| assert(pooling_elements != 0); |
| assert(pooling_elements <= 4); |
| assert(channels != 0); |
| |
| const float voutput_max = params->scalar.max; |
| const float voutput_min = params->scalar.min; |
| do { |
| const float* i0 = input[0]; |
| const float* i1 = input[1]; |
| const float* i2 = input[2]; |
| const float* i3 = input[3]; |
| i0 = (const float*) ((uintptr_t) i0 + input_offset); |
| i1 = (const float*) ((uintptr_t) i1 + input_offset); |
| i2 = (const float*) ((uintptr_t) i2 + input_offset); |
| i3 = (const float*) ((uintptr_t) i3 + input_offset); |
| if (pooling_elements < 2) { |
| i1 = i0; |
| } |
| if (pooling_elements <= 2) { |
| i2 = i0; |
| } |
| if (pooling_elements != 4) { |
| i3 = i0; |
| } |
| |
| size_t c = channels; |
| do { |
| const float vi0 = *i0++; |
| const float vi1 = *i1++; |
| const float vi2 = *i2++; |
| const float vi3 = *i3++; |
| |
| float vmax = vi0; |
| uint32_t vidx = 0; |
| |
| if (vi1 > vmax) { |
| vmax = vi1; |
| vidx = 1; |
| } |
| |
| if (vi2 > vmax) { |
| vmax = vi2; |
| vidx = 2; |
| } |
| |
| if (vi3 > vmax) { |
| vmax = vi3; |
| vidx = 3; |
| } |
| |
| const float vout = math_max_f32(math_min_f32(vmax, voutput_max), voutput_min); |
| |
| *output++ = vout; |
| *index++ = vidx; |
| } while (--c != 0); |
| input = (const float**) ((uintptr_t) input + input_increment); |
| output = (float*) ((uintptr_t) output + output_increment); |
| } while (--output_pixels != 0); |
| } |