| @@ -35,8 +35,9 @@ int CELU::forward_inplace(Mat& bottom_top_blob, const Option& opt) const | |||
| { | |||
| int w = bottom_top_blob.w; | |||
| int h = bottom_top_blob.h; | |||
| int d = bottom_top_blob.d; | |||
| int channels = bottom_top_blob.c; | |||
| int size = w * h; | |||
| int size = w * h * d; | |||
| #pragma omp parallel for num_threads(opt.num_threads) | |||
| for (int q = 0; q < channels; q++) | |||
| @@ -0,0 +1,182 @@ | |||
| // Tencent is pleased to support the open source community by making ncnn available. | |||
| // | |||
| // Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved. | |||
| // | |||
| // Licensed under the BSD 3-Clause License (the "License"); you may not use this file except | |||
| // in compliance with the License. You may obtain a copy of the License at | |||
| // | |||
| // https://opensource.org/licenses/BSD-3-Clause | |||
| // | |||
| // Unless required by applicable law or agreed to in writing, software distributed | |||
| // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR | |||
| // CONDITIONS OF ANY KIND, either express or implied. See the License for the | |||
| // specific language governing permissions and limitations under the License. | |||
| #include "celu_vulkan.h" | |||
| #include "layer_shader_type.h" | |||
| namespace ncnn { | |||
| CELU_vulkan::CELU_vulkan() | |||
| { | |||
| support_vulkan = true; | |||
| support_image_storage = true; | |||
| pipeline_celu = 0; | |||
| pipeline_celu_pack4 = 0; | |||
| pipeline_celu_pack8 = 0; | |||
| } | |||
| int CELU_vulkan::create_pipeline(const Option& opt) | |||
| { | |||
| const Mat& shape = top_shapes.empty() ? Mat() : top_shapes[0]; | |||
| int elempack = 1; | |||
| if (shape.dims == 1) elempack = opt.use_shader_pack8 && shape.w % 8 == 0 ? 8 : shape.w % 4 == 0 ? 4 : 1; | |||
| if (shape.dims == 2) elempack = opt.use_shader_pack8 && shape.h % 8 == 0 ? 8 : shape.h % 4 == 0 ? 4 : 1; | |||
| if (shape.dims == 3 || shape.dims == 4) elempack = opt.use_shader_pack8 && shape.c % 8 == 0 ? 8 : shape.c % 4 == 0 ? 4 : 1; | |||
| size_t elemsize; | |||
| if (opt.use_fp16_storage) | |||
| { | |||
| elemsize = elempack * 2u; | |||
| } | |||
| else if (opt.use_fp16_packed) | |||
| { | |||
| elemsize = elempack == 1 ? 4u : elempack * 2u; | |||
| } | |||
| else | |||
| { | |||
| elemsize = elempack * 4u; | |||
| } | |||
| Mat shape_packed; | |||
| if (shape.dims == 1) shape_packed = Mat(shape.w / elempack, (void*)0, elemsize, elempack); | |||
| if (shape.dims == 2) shape_packed = Mat(shape.w, shape.h / elempack, (void*)0, elemsize, elempack); | |||
| if (shape.dims == 3) shape_packed = Mat(shape.w, shape.h, shape.c / elempack, (void*)0, elemsize, elempack); | |||
| if (shape.dims == 4) shape_packed = Mat(shape.w, shape.h, shape.d, shape.c / elempack, (void*)0, elemsize, elempack); | |||
| std::vector<vk_specialization_type> specializations(1 + 5); | |||
| specializations[0].f = alpha; | |||
| specializations[1 + 0].i = shape_packed.dims; | |||
| specializations[1 + 1].i = shape_packed.w; | |||
| specializations[1 + 2].i = shape_packed.h * shape_packed.d; | |||
| specializations[1 + 3].i = shape_packed.c; | |||
| specializations[1 + 4].i = shape_packed.cstep; | |||
| Mat local_size_xyz; | |||
| if (shape_packed.dims == 1) | |||
| { | |||
| local_size_xyz.w = std::min(64, shape_packed.w); | |||
| local_size_xyz.h = 1; | |||
| local_size_xyz.c = 1; | |||
| } | |||
| if (shape_packed.dims == 2) | |||
| { | |||
| local_size_xyz.w = std::min(8, shape_packed.w); | |||
| local_size_xyz.h = std::min(8, shape_packed.h); | |||
| local_size_xyz.c = 1; | |||
| } | |||
| if (shape_packed.dims == 3) | |||
| { | |||
| local_size_xyz.w = std::min(4, shape_packed.w); | |||
| local_size_xyz.h = std::min(4, shape_packed.h); | |||
| local_size_xyz.c = std::min(4, shape_packed.c); | |||
| } | |||
| if (shape_packed.dims == 4) | |||
| { | |||
| local_size_xyz.w = std::min(4, shape_packed.w); | |||
| local_size_xyz.h = std::min(4, shape_packed.h * shape_packed.d); | |||
| local_size_xyz.c = std::min(4, shape_packed.c); | |||
| } | |||
| // pack1 | |||
| if (shape.dims == 0 || elempack == 1) | |||
| { | |||
| pipeline_celu = new Pipeline(vkdev); | |||
| pipeline_celu->set_optimal_local_size_xyz(local_size_xyz); | |||
| pipeline_celu->create(LayerShaderType::celu, opt, specializations); | |||
| } | |||
| // pack4 | |||
| if (shape.dims == 0 || elempack == 4) | |||
| { | |||
| pipeline_celu_pack4 = new Pipeline(vkdev); | |||
| pipeline_celu_pack4->set_optimal_local_size_xyz(local_size_xyz); | |||
| pipeline_celu_pack4->create(LayerShaderType::celu_pack4, opt, specializations); | |||
| } | |||
| // pack8 | |||
| if ((opt.use_shader_pack8 && shape.dims == 0) || elempack == 8) | |||
| { | |||
| pipeline_celu_pack8 = new Pipeline(vkdev); | |||
| pipeline_celu_pack8->set_optimal_local_size_xyz(local_size_xyz); | |||
| pipeline_celu_pack8->create(LayerShaderType::celu_pack8, opt, specializations); | |||
| } | |||
| return 0; | |||
| } | |||
| int CELU_vulkan::destroy_pipeline(const Option& /*opt*/) | |||
| { | |||
| delete pipeline_celu; | |||
| pipeline_celu = 0; | |||
| delete pipeline_celu_pack4; | |||
| pipeline_celu_pack4 = 0; | |||
| delete pipeline_celu_pack8; | |||
| pipeline_celu_pack8 = 0; | |||
| return 0; | |||
| } | |||
| int CELU_vulkan::forward_inplace(VkMat& bottom_top_blob, VkCompute& cmd, const Option& /*opt*/) const | |||
| { | |||
| int elempack = bottom_top_blob.elempack; | |||
| std::vector<VkMat> bindings(1); | |||
| bindings[0] = bottom_top_blob; | |||
| std::vector<vk_constant_type> constants(5); | |||
| constants[0].i = bottom_top_blob.dims; | |||
| constants[1].i = bottom_top_blob.w; | |||
| constants[2].i = bottom_top_blob.h * bottom_top_blob.d; | |||
| constants[3].i = bottom_top_blob.c; | |||
| constants[4].i = bottom_top_blob.cstep; | |||
| const Pipeline* pipeline = elempack == 8 ? pipeline_celu_pack8 | |||
| : elempack == 4 ? pipeline_celu_pack4 | |||
| : pipeline_celu; | |||
| cmd.record_pipeline(pipeline, bindings, constants, bottom_top_blob); | |||
| return 0; | |||
| } | |||
| int CELU_vulkan::forward_inplace(VkImageMat& bottom_top_blob, VkCompute& cmd, const Option& /*opt*/) const | |||
| { | |||
| int elempack = bottom_top_blob.elempack; | |||
| std::vector<VkImageMat> bindings(2); | |||
| bindings[0] = bottom_top_blob; | |||
| bindings[1] = bottom_top_blob; | |||
| std::vector<vk_constant_type> constants(5); | |||
| constants[0].i = bottom_top_blob.dims; | |||
| constants[1].i = bottom_top_blob.w; | |||
| constants[2].i = bottom_top_blob.h * bottom_top_blob.d; | |||
| constants[3].i = bottom_top_blob.c; | |||
| constants[4].i = 0; //bottom_top_blob.cstep; | |||
| const Pipeline* pipeline = elempack == 8 ? pipeline_celu_pack8 | |||
| : elempack == 4 ? pipeline_celu_pack4 | |||
| : pipeline_celu; | |||
| cmd.record_pipeline(pipeline, bindings, constants, bottom_top_blob); | |||
| return 0; | |||
| } | |||
| } // namespace ncnn | |||
| @@ -0,0 +1,42 @@ | |||
| // Tencent is pleased to support the open source community by making ncnn available. | |||
| // | |||
| // Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved. | |||
| // | |||
| // Licensed under the BSD 3-Clause License (the "License"); you may not use this file except | |||
| // in compliance with the License. You may obtain a copy of the License at | |||
| // | |||
| // https://opensource.org/licenses/BSD-3-Clause | |||
| // | |||
| // Unless required by applicable law or agreed to in writing, software distributed | |||
| // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR | |||
| // CONDITIONS OF ANY KIND, either express or implied. See the License for the | |||
| // specific language governing permissions and limitations under the License. | |||
| #ifndef LAYER_CELU_VULKAN_H | |||
| #define LAYER_CELU_VULKAN_H | |||
| #include "celu.h" | |||
| namespace ncnn { | |||
| class CELU_vulkan : virtual public CELU | |||
| { | |||
| public: | |||
| CELU_vulkan(); | |||
| virtual int create_pipeline(const Option& opt); | |||
| virtual int destroy_pipeline(const Option& opt); | |||
| using CELU::forward_inplace; | |||
| virtual int forward_inplace(VkMat& bottom_top_blob, VkCompute& cmd, const Option& opt) const; | |||
| virtual int forward_inplace(VkImageMat& bottom_top_blob, VkCompute& cmd, const Option& opt) const; | |||
| public: | |||
| Pipeline* pipeline_celu; | |||
| Pipeline* pipeline_celu_pack4; | |||
| Pipeline* pipeline_celu_pack8; | |||
| }; | |||
| } // namespace ncnn | |||
| #endif // LAYER_CELU_VULKAN_H | |||
| @@ -0,0 +1,73 @@ | |||
| // Tencent is pleased to support the open source community by making ncnn available. | |||
| // | |||
| // Copyright (C) 2018 THL A29 Limited, a Tencent company. All rights reserved. | |||
| // | |||
| // Licensed under the BSD 3-Clause License (the "License"); you may not use this file except | |||
| // in compliance with the License. You may obtain a copy of the License at | |||
| // | |||
| // https://opensource.org/licenses/BSD-3-Clause | |||
| // | |||
| // Unless required by applicable law or agreed to in writing, software distributed | |||
| // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR | |||
| // CONDITIONS OF ANY KIND, either express or implied. See the License for the | |||
| // specific language governing permissions and limitations under the License. | |||
| #version 450 | |||
| #if NCNN_fp16_storage | |||
| #extension GL_EXT_shader_16bit_storage: require | |||
| #endif | |||
| #if NCNN_fp16_arithmetic | |||
| #extension GL_EXT_shader_explicit_arithmetic_types_float16: require | |||
| #endif | |||
| layout (constant_id = 0) const float alpha = 0; | |||
| #define shape_constant_id_offset 1 | |||
| layout (constant_id = shape_constant_id_offset + 0) const int dims = 0; | |||
| layout (constant_id = shape_constant_id_offset + 1) const int w = 0; | |||
| layout (constant_id = shape_constant_id_offset + 2) const int h = 0; | |||
| layout (constant_id = shape_constant_id_offset + 3) const int c = 0; | |||
| layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0; | |||
| #if NCNN_image_shader | |||
| layout (binding = 0) uniform unfp sampler3D bottom_blob_3d; | |||
| layout (binding = 1, imfmtc1) writeonly uniform unfp image3D top_blob_3d; | |||
| #else | |||
| layout (binding = 0) buffer bottom_top_blob { sfp bottom_top_blob_data[]; }; | |||
| #endif | |||
| layout (push_constant) uniform parameter | |||
| { | |||
| int dims; | |||
| int w; | |||
| int h; | |||
| int c; | |||
| int cstep; | |||
| } p; | |||
| void main() | |||
| { | |||
| int gx = int(gl_GlobalInvocationID.x); | |||
| int gy = int(gl_GlobalInvocationID.y); | |||
| int gz = int(gl_GlobalInvocationID.z); | |||
| if (gx >= psc(w) || gy >= psc(h) || gz >= psc(c)) | |||
| return; | |||
| #if NCNN_image_shader | |||
| afp v = image3d_ld1(bottom_blob_3d, ivec3(gx, gy, gz)); | |||
| #else | |||
| const int gi = gz * psc(cstep) + gy * psc(w) + gx; | |||
| afp v = buffer_ld1(bottom_top_blob_data, gi); | |||
| #endif | |||
| v = max(v, afp(0.0f)) + min(alpha * (exp(v / alpha) - 1.0f), afp(0.0f)); | |||
| #if NCNN_image_shader | |||
| image3d_st1(top_blob_3d, ivec3(gx, gy, gz), v); | |||
| #else | |||
| buffer_st1(bottom_top_blob_data, gi, v); | |||
| #endif | |||
| } | |||
| @@ -0,0 +1,73 @@ | |||
| // Tencent is pleased to support the open source community by making ncnn available. | |||
| // | |||
| // Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved. | |||
| // | |||
| // Licensed under the BSD 3-Clause License (the "License"); you may not use this file except | |||
| // in compliance with the License. You may obtain a copy of the License at | |||
| // | |||
| // https://opensource.org/licenses/BSD-3-Clause | |||
| // | |||
| // Unless required by applicable law or agreed to in writing, software distributed | |||
| // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR | |||
| // CONDITIONS OF ANY KIND, either express or implied. See the License for the | |||
| // specific language governing permissions and limitations under the License. | |||
| #version 450 | |||
| #if NCNN_fp16_storage | |||
| #extension GL_EXT_shader_16bit_storage: require | |||
| #endif | |||
| #if NCNN_fp16_arithmetic | |||
| #extension GL_EXT_shader_explicit_arithmetic_types_float16: require | |||
| #endif | |||
| layout (constant_id = 0) const float alpha = 0; | |||
| #define shape_constant_id_offset 1 | |||
| layout (constant_id = shape_constant_id_offset + 0) const int dims = 0; | |||
| layout (constant_id = shape_constant_id_offset + 1) const int w = 0; | |||
| layout (constant_id = shape_constant_id_offset + 2) const int h = 0; | |||
| layout (constant_id = shape_constant_id_offset + 3) const int c = 0; | |||
| layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0; | |||
| #if NCNN_image_shader | |||
| layout (binding = 0) uniform unfp sampler3D bottom_blob_3d; | |||
| layout (binding = 1, imfmtc4) writeonly uniform unfp image3D top_blob_3d; | |||
| #else | |||
| layout (binding = 0) buffer bottom_top_blob { sfpvec4 bottom_top_blob_data[]; }; | |||
| #endif | |||
| layout (push_constant) uniform parameter | |||
| { | |||
| int dims; | |||
| int w; | |||
| int h; | |||
| int c; | |||
| int cstep; | |||
| } p; | |||
| void main() | |||
| { | |||
| int gx = int(gl_GlobalInvocationID.x); | |||
| int gy = int(gl_GlobalInvocationID.y); | |||
| int gz = int(gl_GlobalInvocationID.z); | |||
| if (gx >= psc(w) || gy >= psc(h) || gz >= psc(c)) | |||
| return; | |||
| #if NCNN_image_shader | |||
| afpvec4 v = image3d_ld4(bottom_blob_3d, ivec3(gx, gy, gz)); | |||
| #else | |||
| const int gi = gz * psc(cstep) + gy * psc(w) + gx; | |||
| afpvec4 v = buffer_ld4(bottom_top_blob_data, gi); | |||
| #endif | |||
| v = max(v, afp(0.0f)) + min(alpha * (exp(v / alpha) - 1.0f), afp(0.0f)); | |||
| #if NCNN_image_shader | |||
| image3d_st4(top_blob_3d, ivec3(gx, gy, gz), v); | |||
| #else | |||
| buffer_st4(bottom_top_blob_data, gi, v); | |||
| #endif | |||
| } | |||
| @@ -0,0 +1,75 @@ | |||
| // Tencent is pleased to support the open source community by making ncnn available. | |||
| // | |||
| // Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved. | |||
| // | |||
| // Licensed under the BSD 3-Clause License (the "License"); you may not use this file except | |||
| // in compliance with the License. You may obtain a copy of the License at | |||
| // | |||
| // https://opensource.org/licenses/BSD-3-Clause | |||
| // | |||
| // Unless required by applicable law or agreed to in writing, software distributed | |||
| // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR | |||
| // CONDITIONS OF ANY KIND, either express or implied. See the License for the | |||
| // specific language governing permissions and limitations under the License. | |||
| #version 450 | |||
| #if NCNN_fp16_storage | |||
| #extension GL_EXT_shader_16bit_storage: require | |||
| struct sfpvec8 { f16vec4 abcd; f16vec4 efgh; }; | |||
| #endif | |||
| #if NCNN_fp16_arithmetic | |||
| #extension GL_EXT_shader_explicit_arithmetic_types_float16: require | |||
| #endif | |||
| layout (constant_id = 0) const float alpha = 0; | |||
| #define shape_constant_id_offset 1 | |||
| layout (constant_id = shape_constant_id_offset + 0) const int dims = 0; | |||
| layout (constant_id = shape_constant_id_offset + 1) const int w = 0; | |||
| layout (constant_id = shape_constant_id_offset + 2) const int h = 0; | |||
| layout (constant_id = shape_constant_id_offset + 3) const int c = 0; | |||
| layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0; | |||
| #if NCNN_image_shader | |||
| layout (binding = 0) uniform unfp sampler3D bottom_blob_3d; | |||
| layout (binding = 1, imfmtc4) writeonly uniform unfp image3D top_blob_3d; | |||
| #else | |||
| layout (binding = 0) buffer bottom_top_blob { sfpvec8 bottom_top_blob_data[]; }; | |||
| #endif | |||
| layout (push_constant) uniform parameter | |||
| { | |||
| int dims; | |||
| int w; | |||
| int h; | |||
| int c; | |||
| int cstep; | |||
| } p; | |||
| void main() | |||
| { | |||
| int gx = int(gl_GlobalInvocationID.x); | |||
| int gy = int(gl_GlobalInvocationID.y); | |||
| int gz = int(gl_GlobalInvocationID.z); | |||
| if (gx >= psc(w) || gy >= psc(h) || gz >= psc(c)) | |||
| return; | |||
| #if NCNN_image_shader | |||
| afpvec8 v = image3d_ld8(bottom_blob_3d, ivec3(gx, gy, gz)); | |||
| #else | |||
| const int gi = gz * psc(cstep) + gy * psc(w) + gx; | |||
| afpvec8 v = buffer_ld8(bottom_top_blob_data, gi); | |||
| #endif | |||
| v[0] = max(v[0], afp(0.0f)) + min(alpha * (exp(v[0] / alpha) - 1.0f), afp(0.0f)); | |||
| v[1] = max(v[1], afp(0.0f)) + min(alpha*(exp(v[1]/alpha)-1), afp(0.0f)); | |||
| #if NCNN_image_shader | |||
| image3d_st8(top_blob_3d, ivec3(gx, gy, gz), v); | |||
| #else | |||
| buffer_st8(bottom_top_blob_data, gi, v); | |||
| #endif | |||
| } | |||
| @@ -25,7 +25,7 @@ static int test_celu(const ncnn::Mat& a, float alpha) | |||
| int ret = test_layer<ncnn::CELU>("CELU", pd, weights, a); | |||
| if (ret != 0) | |||
| { | |||
| fprintf(stderr, "test_celu failed a.dims=%d a=(%d %d %d) alpha=%f\n", a.dims, a.w, a.h, a.c, alpha); | |||
| fprintf(stderr, "test_celu failed a.dims=%d a=(%d %d %d %d) alpha=%f\n", a.dims, a.w, a.h, a.d, a.c, alpha); | |||
| } | |||
| return ret; | |||
| @@ -34,25 +34,45 @@ static int test_celu(const ncnn::Mat& a, float alpha) | |||
| static int test_celu_0() | |||
| { | |||
| return 0 | |||
| || test_celu(RandomMat(5, 7, 24), 1.f) | |||
| || test_celu(RandomMat(7, 9, 12), 0.5f) | |||
| || test_celu(RandomMat(3, 5, 13), 0.2f); | |||
| || test_celu(RandomMat(3, 8, 12, 18), 1.f) | |||
| || test_celu(RandomMat(4, 7, 9, 16), 0.1f) | |||
| || test_celu(RandomMat(3, 5, 12, 16), 1.f) | |||
| || test_celu(RandomMat(9, 6, 7, 14), 0.1f) | |||
| || test_celu(RandomMat(5, 6, 9, 10), 1.f) | |||
| || test_celu(RandomMat(6, 8, 2, 15), 0.1f); | |||
| } | |||
| static int test_celu_1() | |||
| { | |||
| return 0 | |||
| || test_celu(RandomMat(15, 24), 1.f) | |||
| || test_celu(RandomMat(17, 12), 0.5f) | |||
| || test_celu(RandomMat(19, 15), 0.2f); | |||
| || test_celu(RandomMat(7, 6, 18), 1.f) | |||
| || test_celu(RandomMat(9, 6, 15), 0.1f) | |||
| || test_celu(RandomMat(9, 7, 16), 1.f) | |||
| || test_celu(RandomMat(6, 10, 15), 0.1f) | |||
| || test_celu(RandomMat(2, 7, 11), 1.f) | |||
| || test_celu(RandomMat(6, 10, 7), 0.1f); | |||
| } | |||
| static int test_celu_2() | |||
| { | |||
| return 0 | |||
| || test_celu(RandomMat(12, 18), 1.f) | |||
| || test_celu(RandomMat(18, 12), 0.1f) | |||
| || test_celu(RandomMat(23, 27), 1.f) | |||
| || test_celu(RandomMat(18, 16), 0.1f) | |||
| || test_celu(RandomMat(18, 16), 1.f) | |||
| || test_celu(RandomMat(20, 16), 0.1f); | |||
| } | |||
| static int test_celu_3() | |||
| { | |||
| return 0 | |||
| || test_celu(RandomMat(256), 1.f) | |||
| || test_celu(RandomMat(64), 0.1f) | |||
| || test_celu(RandomMat(128), 1.f) | |||
| || test_celu(RandomMat(96), 0.1f) | |||
| || test_celu(RandomMat(128), 1.f) | |||
| || test_celu(RandomMat(124), 0.5f) | |||
| || test_celu(RandomMat(127), 0.2f); | |||
| || test_celu(RandomMat(128), 0.1f); | |||
| } | |||
| int main() | |||
| @@ -62,5 +82,6 @@ int main() | |||
| return 0 | |||
| || test_celu_0() | |||
| || test_celu_1() | |||
| || test_celu_2(); | |||
| || test_celu_2() | |||
| || test_celu_3(); | |||
| } | |||
| @@ -3641,6 +3641,10 @@ int main(int argc, char** argv) | |||
| { | |||
| fprintf(pp, "%-16s", "UnaryOp"); | |||
| } | |||
| else if (op == "Celu") | |||
| { | |||
| fprintf(pp, "%-16s", "CELU"); | |||
| } | |||
| else if (op == "Clip") | |||
| { | |||
| fprintf(pp, "%-16s", "Clip"); | |||
| @@ -4154,6 +4158,12 @@ int main(int argc, char** argv) | |||
| int op_type = 3; | |||
| fprintf(pp, " 0=%d", op_type); | |||
| } | |||
| else if (op == "CeLU") | |||
| { | |||
| float alpha = get_node_attr_f(node, "alpha", 1.0f); | |||
| fprintf(pp, " 0=%e", alpha); | |||
| } | |||
| else if (op == "Clip") | |||
| { | |||
| float min; | |||