mirror of https://github.com/google/gemma.cpp.git
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
// Copyright 2024 Google LLC
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// SPDX-License-Identifier: Apache-2.0
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef THIRD_PARTY_GEMMA_CPP_GEMMA_COMMON_H_
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#define THIRD_PARTY_GEMMA_CPP_GEMMA_COMMON_H_
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#include <stddef.h>
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#include <string>
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#include "compression/shared.h" // PromptWrapping
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#include "gemma/configs.h" // IWYU pragma: export
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#include "hwy/base.h" // ConvertScalarTo
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namespace gcpp {
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// Struct to bundle model information.
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struct ModelInfo {
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Model model;
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PromptWrapping wrapping;
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Type weight;
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};
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// Returns error string or nullptr if OK.
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// Thread-hostile.
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const char* ParseModelTypeAndWrapping(const std::string& model_flag,
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Model& model, PromptWrapping& wrapping);
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const char* ParseType(const std::string& type_string, Type& type);
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// Inverse of ParseModelTypeAndWrapping.
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const char* ModelString(Model model, PromptWrapping wrapping);
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const char* StringFromType(Type type);
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// Wraps the given prompt using the expected control tokens for IT models.
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void Wrap(const ModelInfo& info, size_t pos, std::string& prompt);
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// Returns the scale value to use for the embedding (basically sqrt model_dim).
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float EmbeddingScaling(size_t model_dim);
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// Returns the scale value to use for the query in the attention computation.
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float ChooseQueryScale(const ModelConfig& config);
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} // namespace gcpp
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#endif // THIRD_PARTY_GEMMA_CPP_GEMMA_COMMON_H_
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