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Add VectorTransform read from filename to the C API #3970

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Add VectorTransform read from filename to the C API #3970

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9 changes: 9 additions & 0 deletions c_api/index_io_c.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@

using faiss::Index;
using faiss::IndexBinary;
using faiss::VectorTransform;

int faiss_write_index(const FaissIndex* idx, FILE* f) {
try {
Expand Down Expand Up @@ -84,3 +85,11 @@ int faiss_read_index_binary_fname(
}
CATCH_AND_HANDLE
}

int faiss_read_VectorTransform_fname(const char* fname, FaissVectorTransform** p_out) {
try {
auto out = faiss::read_VectorTransform(fname);
*p_out = reinterpret_cast<FaissVectorTransform*>(out);
}
CATCH_AND_HANDLE
}
6 changes: 6 additions & 0 deletions c_api/index_io_c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
#include "IndexBinary_c.h"
#include "Index_c.h"
#include "faiss_c.h"
#include "VectorTransform_c.h"

#ifdef __cplusplus
extern "C" {
Expand Down Expand Up @@ -72,6 +73,11 @@ int faiss_read_index_binary_fname(
const char* fname,
int io_flags,
FaissIndexBinary** p_out);

/** Read vector transform from a file.
* This is equivalent to `faiss:read_VectorTransform` when a file path is given.
*/
int faiss_read_VectorTransform_fname(const char* fname, FaissVectorTransform** p_out);
#ifdef __cplusplus
}
#endif
Expand Down