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Add `svs_index_load()` and `svs_index_save()` API implementation for static Vamana index
Done: - [x] Create dynamic index with specified block size (default block size should be supported) - [x] Initialized with a dataset and labels list - [x] Add labeled vectors to a dynamic index - [x] Remove vectors by labels - [x] Check if a label exists - [x] Compute distance for label - [x] Get vector by label - [x] Consolidate/compact dynamic index - [x] Implement Save/Load
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Scalable Vector Search C API bindings.
This pull request introduces a new C API binding for the project, providing C language access to the core Scalable Vector Search (SVS) functionality. The changes add a complete build system for the C API, define the public C API headers, and include a sample program to demonstrate usage. The most important changes are grouped below:
C API Design Document
bindings/SVS_C_API_Design.mddocument which describes the design proposal for the Scalable Vector Search (SVS) C API including: architecture overview, core components design, naming conventions, usage rules, draft API reference, etc.C API Implementation and Build System:
bindings/cdirectory with aCMakeLists.txtto build the shared librarysvs_c_api, set up installation rules, and link dependencies such as OpenMP and the core SVS library.CMakeLists.txtto include the new C API bindings in the build process.c_apiConfig.cmake.in) for downstream projects to find and use the C API library.C API Public Headers:
svs_c.handsvs_c_config.hinbindings/c/include/svs/c_api/, defining the C API's types, enums, opaque handles, and functions for error handling, algorithm configuration, storage configuration, index building, searching, and result management. [1] [2]Samples and Demonstration:
samplesdirectory with aCMakeLists.txtto build a simple example (c_api_simple) demonstrating how to use the new C API.