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/* automatically generated by rust-bindgen 0.69.2 */

pub type faiss_idx_t = i64;
pub type idx_t = faiss_idx_t;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissRangeSearchResult_H {
    _unused: [u8; 0],
}
pub type FaissRangeSearchResult = FaissRangeSearchResult_H;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelector_H {
    _unused: [u8; 0],
}
pub type FaissIDSelector = FaissIDSelector_H;
#[repr(u32)]
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
pub enum FaissMetricType {
    METRIC_INNER_PRODUCT = 0,
    METRIC_L2 = 1,
    METRIC_L1 = 2,
    METRIC_Linf = 3,
    METRIC_Lp = 4,
    METRIC_Canberra = 20,
    METRIC_BrayCurtis = 21,
    METRIC_JensenShannon = 22,
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissSearchParameters_H {
    _unused: [u8; 0],
}
pub type FaissSearchParameters = FaissSearchParameters_H;
extern "C" {
    pub fn faiss_SearchParameters_free(obj: *mut FaissSearchParameters);
}
extern "C" {
    pub fn faiss_SearchParameters_new(
        p_sp: *mut *mut FaissSearchParameters,
        sel: *mut FaissIDSelector,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIndex_H {
    _unused: [u8; 0],
}
pub type FaissIndex = FaissIndex_H;
extern "C" {
    pub fn faiss_Index_free(obj: *mut FaissIndex);
}
extern "C" {
    pub fn faiss_Index_d(arg1: *const FaissIndex) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_is_trained(arg1: *const FaissIndex) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_ntotal(arg1: *const FaissIndex) -> idx_t;
}
extern "C" {
    pub fn faiss_Index_metric_type(arg1: *const FaissIndex) -> FaissMetricType;
}
extern "C" {
    pub fn faiss_Index_verbose(arg1: *const FaissIndex) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_set_verbose(arg1: *mut FaissIndex, arg2: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_Index_train(
        index: *mut FaissIndex,
        n: idx_t,
        x: *const f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_add(
        index: *mut FaissIndex,
        n: idx_t,
        x: *const f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_add_with_ids(
        index: *mut FaissIndex,
        n: idx_t,
        x: *const f32,
        xids: *const idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_search(
        index: *const FaissIndex,
        n: idx_t,
        x: *const f32,
        k: idx_t,
        distances: *mut f32,
        labels: *mut idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_search_with_params(
        index: *const FaissIndex,
        n: idx_t,
        x: *const f32,
        k: idx_t,
        params: *const FaissSearchParameters,
        distances: *mut f32,
        labels: *mut idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_range_search(
        index: *const FaissIndex,
        n: idx_t,
        x: *const f32,
        radius: f32,
        result: *mut FaissRangeSearchResult,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_assign(
        index: *mut FaissIndex,
        n: idx_t,
        x: *const f32,
        labels: *mut idx_t,
        k: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_reset(index: *mut FaissIndex) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_remove_ids(
        index: *mut FaissIndex,
        sel: *const FaissIDSelector,
        n_removed: *mut usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_reconstruct(
        index: *const FaissIndex,
        key: idx_t,
        recons: *mut f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_reconstruct_n(
        index: *const FaissIndex,
        i0: idx_t,
        ni: idx_t,
        recons: *mut f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_compute_residual(
        index: *const FaissIndex,
        x: *const f32,
        residual: *mut f32,
        key: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_compute_residual_n(
        index: *const FaissIndex,
        n: idx_t,
        x: *const f32,
        residuals: *mut f32,
        keys: *const idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_sa_code_size(
        index: *const FaissIndex,
        size: *mut usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_sa_encode(
        index: *const FaissIndex,
        n: idx_t,
        x: *const f32,
        bytes: *mut u8,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Index_sa_decode(
        index: *const FaissIndex,
        n: idx_t,
        bytes: *const u8,
        x: *mut f32,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissParameterRange_H {
    _unused: [u8; 0],
}
pub type FaissParameterRange = FaissParameterRange_H;
extern "C" {
    pub fn faiss_ParameterRange_name(
        arg1: *const FaissParameterRange,
    ) -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn faiss_ParameterRange_values(
        arg1: *mut FaissParameterRange,
        arg2: *mut *mut f64,
        arg3: *mut usize,
    );
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissParameterSpace_H {
    _unused: [u8; 0],
}
pub type FaissParameterSpace = FaissParameterSpace_H;
extern "C" {
    pub fn faiss_ParameterSpace_free(obj: *mut FaissParameterSpace);
}
extern "C" {
    pub fn faiss_ParameterSpace_new(space: *mut *mut FaissParameterSpace) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_ParameterSpace_n_combinations(arg1: *const FaissParameterSpace) -> usize;
}
extern "C" {
    pub fn faiss_ParameterSpace_combination_name(
        arg1: *const FaissParameterSpace,
        arg2: usize,
        arg3: *mut ::std::os::raw::c_char,
        arg4: usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_ParameterSpace_set_index_parameters(
        arg1: *const FaissParameterSpace,
        arg2: *mut FaissIndex,
        arg3: *const ::std::os::raw::c_char,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_ParameterSpace_set_index_parameters_cno(
        arg1: *const FaissParameterSpace,
        arg2: *mut FaissIndex,
        arg3: usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_ParameterSpace_set_index_parameter(
        arg1: *const FaissParameterSpace,
        arg2: *mut FaissIndex,
        arg3: *const ::std::os::raw::c_char,
        arg4: f64,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_ParameterSpace_display(arg1: *const FaissParameterSpace);
}
extern "C" {
    pub fn faiss_ParameterSpace_add_range(
        arg1: *mut FaissParameterSpace,
        arg2: *const ::std::os::raw::c_char,
        arg3: *mut *mut FaissParameterRange,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissClusteringParameters {
    pub niter: ::std::os::raw::c_int,
    pub nredo: ::std::os::raw::c_int,
    pub verbose: ::std::os::raw::c_int,
    pub spherical: ::std::os::raw::c_int,
    pub int_centroids: ::std::os::raw::c_int,
    pub update_index: ::std::os::raw::c_int,
    pub frozen_centroids: ::std::os::raw::c_int,
    pub min_points_per_centroid: ::std::os::raw::c_int,
    pub max_points_per_centroid: ::std::os::raw::c_int,
    pub seed: ::std::os::raw::c_int,
    pub decode_block_size: usize,
}
extern "C" {
    pub fn faiss_ClusteringParameters_init(params: *mut FaissClusteringParameters);
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissClustering_H {
    _unused: [u8; 0],
}
pub type FaissClustering = FaissClustering_H;
extern "C" {
    pub fn faiss_Clustering_niter(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_nredo(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_verbose(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_spherical(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_int_centroids(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_update_index(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_frozen_centroids(arg1: *const FaissClustering)
        -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_min_points_per_centroid(
        arg1: *const FaissClustering,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_max_points_per_centroid(
        arg1: *const FaissClustering,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_seed(arg1: *const FaissClustering) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_decode_block_size(arg1: *const FaissClustering) -> usize;
}
extern "C" {
    pub fn faiss_Clustering_d(arg1: *const FaissClustering) -> usize;
}
extern "C" {
    pub fn faiss_Clustering_k(arg1: *const FaissClustering) -> usize;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissClusteringIterationStats_H {
    _unused: [u8; 0],
}
pub type FaissClusteringIterationStats = FaissClusteringIterationStats_H;
extern "C" {
    pub fn faiss_ClusteringIterationStats_obj(arg1: *const FaissClusteringIterationStats) -> f32;
}
extern "C" {
    pub fn faiss_ClusteringIterationStats_time(arg1: *const FaissClusteringIterationStats) -> f64;
}
extern "C" {
    pub fn faiss_ClusteringIterationStats_time_search(
        arg1: *const FaissClusteringIterationStats,
    ) -> f64;
}
extern "C" {
    pub fn faiss_ClusteringIterationStats_imbalance_factor(
        arg1: *const FaissClusteringIterationStats,
    ) -> f64;
}
extern "C" {
    pub fn faiss_ClusteringIterationStats_nsplit(
        arg1: *const FaissClusteringIterationStats,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_centroids(
        clustering: *mut FaissClustering,
        centroids: *mut *mut f32,
        size: *mut usize,
    );
}
extern "C" {
    pub fn faiss_Clustering_iteration_stats(
        clustering: *mut FaissClustering,
        iteration_stats: *mut *mut FaissClusteringIterationStats,
        size: *mut usize,
    );
}
extern "C" {
    pub fn faiss_Clustering_new(
        p_clustering: *mut *mut FaissClustering,
        d: ::std::os::raw::c_int,
        k: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_new_with_params(
        p_clustering: *mut *mut FaissClustering,
        d: ::std::os::raw::c_int,
        k: ::std::os::raw::c_int,
        cp: *const FaissClusteringParameters,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_train(
        clustering: *mut FaissClustering,
        n: idx_t,
        x: *const f32,
        index: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_Clustering_free(clustering: *mut FaissClustering);
}
extern "C" {
    pub fn faiss_kmeans_clustering(
        d: usize,
        n: usize,
        k: usize,
        x: *const f32,
        centroids: *mut f32,
        q_error: *mut f32,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIndexBinary_H {
    _unused: [u8; 0],
}
pub type FaissIndexBinary = FaissIndexBinary_H;
extern "C" {
    pub fn faiss_IndexBinary_free(obj: *mut FaissIndexBinary);
}
extern "C" {
    pub fn faiss_IndexBinary_d(arg1: *const FaissIndexBinary) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_is_trained(arg1: *const FaissIndexBinary) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_ntotal(arg1: *const FaissIndexBinary) -> idx_t;
}
extern "C" {
    pub fn faiss_IndexBinary_metric_type(arg1: *const FaissIndexBinary) -> FaissMetricType;
}
extern "C" {
    pub fn faiss_IndexBinary_verbose(arg1: *const FaissIndexBinary) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_set_verbose(arg1: *mut FaissIndexBinary, arg2: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_IndexBinary_train(
        index: *mut FaissIndexBinary,
        n: idx_t,
        x: *const u8,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_add(
        index: *mut FaissIndexBinary,
        n: idx_t,
        x: *const u8,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_add_with_ids(
        index: *mut FaissIndexBinary,
        n: idx_t,
        x: *const u8,
        xids: *const idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_search(
        index: *const FaissIndexBinary,
        n: idx_t,
        x: *const u8,
        k: idx_t,
        distances: *mut i32,
        labels: *mut idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_range_search(
        index: *const FaissIndexBinary,
        n: idx_t,
        x: *const u8,
        radius: ::std::os::raw::c_int,
        result: *mut FaissRangeSearchResult,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_assign(
        index: *mut FaissIndexBinary,
        n: idx_t,
        x: *const u8,
        labels: *mut idx_t,
        k: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_reset(index: *mut FaissIndexBinary) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_remove_ids(
        index: *mut FaissIndexBinary,
        sel: *const FaissIDSelector,
        n_removed: *mut usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_reconstruct(
        index: *const FaissIndexBinary,
        key: idx_t,
        recons: *mut u8,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexBinary_reconstruct_n(
        index: *const FaissIndexBinary,
        i0: idx_t,
        ni: idx_t,
        recons: *mut u8,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexFlat = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexFlat_new(p_index: *mut *mut FaissIndexFlat) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexFlat_new_with(
        p_index: *mut *mut FaissIndexFlat,
        d: idx_t,
        metric: FaissMetricType,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexFlat_xb(index: *mut FaissIndexFlat, p_xb: *mut *mut f32, p_size: *mut usize);
}
extern "C" {
    pub fn faiss_IndexFlat_cast(arg1: *mut FaissIndex) -> *mut FaissIndexFlat;
}
extern "C" {
    pub fn faiss_IndexFlat_free(obj: *mut FaissIndexFlat);
}
extern "C" {
    pub fn faiss_IndexFlat_compute_distance_subset(
        index: *mut FaissIndex,
        n: idx_t,
        x: *const f32,
        k: idx_t,
        distances: *mut f32,
        labels: *const idx_t,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexFlatIP = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexFlatIP_cast(arg1: *mut FaissIndex) -> *mut FaissIndexFlatIP;
}
extern "C" {
    pub fn faiss_IndexFlatIP_free(obj: *mut FaissIndexFlatIP);
}
extern "C" {
    pub fn faiss_IndexFlatIP_new(p_index: *mut *mut FaissIndexFlatIP) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexFlatIP_new_with(
        p_index: *mut *mut FaissIndexFlatIP,
        d: idx_t,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexFlatL2 = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexFlatL2_cast(arg1: *mut FaissIndex) -> *mut FaissIndexFlatL2;
}
extern "C" {
    pub fn faiss_IndexFlatL2_free(obj: *mut FaissIndexFlatL2);
}
extern "C" {
    pub fn faiss_IndexFlatL2_new(p_index: *mut *mut FaissIndexFlatL2) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexFlatL2_new_with(
        p_index: *mut *mut FaissIndexFlatL2,
        d: idx_t,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexRefineFlat = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexRefineFlat_new(
        p_index: *mut *mut FaissIndexRefineFlat,
        base_index: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexRefineFlat_free(obj: *mut FaissIndexRefineFlat);
}
extern "C" {
    pub fn faiss_IndexRefineFlat_cast(arg1: *mut FaissIndex) -> *mut FaissIndexRefineFlat;
}
extern "C" {
    pub fn faiss_IndexRefineFlat_own_fields(
        arg1: *const FaissIndexRefineFlat,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexRefineFlat_set_own_fields(
        arg1: *mut FaissIndexRefineFlat,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexRefineFlat_k_factor(arg1: *const FaissIndexRefineFlat) -> f32;
}
extern "C" {
    pub fn faiss_IndexRefineFlat_set_k_factor(arg1: *mut FaissIndexRefineFlat, arg2: f32);
}
pub type FaissIndexFlat1D = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexFlat1D_cast(arg1: *mut FaissIndex) -> *mut FaissIndexFlat1D;
}
extern "C" {
    pub fn faiss_IndexFlat1D_free(obj: *mut FaissIndexFlat1D);
}
extern "C" {
    pub fn faiss_IndexFlat1D_new(p_index: *mut *mut FaissIndexFlat1D) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexFlat1D_new_with(
        p_index: *mut *mut FaissIndexFlat1D,
        continuous_update: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexFlat1D_update_permutation(
        index: *mut FaissIndexFlat1D,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexIVFFlat = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexIVFFlat_free(obj: *mut FaissIndexIVFFlat);
}
extern "C" {
    pub fn faiss_IndexIVFFlat_cast(arg1: *mut FaissIndex) -> *mut FaissIndexIVFFlat;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_nlist(arg1: *const FaissIndexIVFFlat) -> usize;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_nprobe(arg1: *const FaissIndexIVFFlat) -> usize;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_set_nprobe(arg1: *mut FaissIndexIVFFlat, arg2: usize);
}
extern "C" {
    pub fn faiss_IndexIVFFlat_quantizer(arg1: *const FaissIndexIVFFlat) -> *mut FaissIndex;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_quantizer_trains_alone(
        arg1: *const FaissIndexIVFFlat,
    ) -> ::std::os::raw::c_char;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_own_fields(arg1: *const FaissIndexIVFFlat) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_set_own_fields(
        arg1: *mut FaissIndexIVFFlat,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexIVFFlat_new(p_index: *mut *mut FaissIndexIVFFlat) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_new_with(
        p_index: *mut *mut FaissIndexIVFFlat,
        quantizer: *mut FaissIndex,
        d: usize,
        nlist: usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_new_with_metric(
        p_index: *mut *mut FaissIndexIVFFlat,
        quantizer: *mut FaissIndex,
        d: usize,
        nlist: usize,
        metric: FaissMetricType,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_add_core(
        index: *mut FaissIndexIVFFlat,
        n: idx_t,
        x: *const f32,
        xids: *const idx_t,
        precomputed_idx: *const i64,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFFlat_update_vectors(
        index: *mut FaissIndexIVFFlat,
        nv: ::std::os::raw::c_int,
        idx: *mut idx_t,
        v: *const f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchResult_nq(arg1: *const FaissRangeSearchResult) -> usize;
}
extern "C" {
    pub fn faiss_RangeSearchResult_new(
        p_rsr: *mut *mut FaissRangeSearchResult,
        nq: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchResult_new_with(
        p_rsr: *mut *mut FaissRangeSearchResult,
        nq: idx_t,
        alloc_lims: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchResult_do_allocation(
        rsr: *mut FaissRangeSearchResult,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchResult_free(obj: *mut FaissRangeSearchResult);
}
extern "C" {
    pub fn faiss_RangeSearchResult_buffer_size(arg1: *const FaissRangeSearchResult) -> usize;
}
extern "C" {
    pub fn faiss_RangeSearchResult_lims(rsr: *mut FaissRangeSearchResult, lims: *mut *mut usize);
}
extern "C" {
    pub fn faiss_RangeSearchResult_labels(
        rsr: *mut FaissRangeSearchResult,
        labels: *mut *mut idx_t,
        distances: *mut *mut f32,
    );
}
extern "C" {
    pub fn faiss_IDSelector_free(obj: *mut FaissIDSelector);
}
extern "C" {
    pub fn faiss_IDSelector_is_member(
        sel: *const FaissIDSelector,
        id: idx_t,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelectorRange_H {
    _unused: [u8; 0],
}
pub type FaissIDSelectorRange = FaissIDSelectorRange_H;
extern "C" {
    pub fn faiss_IDSelectorRange_free(obj: *mut FaissIDSelectorRange);
}
extern "C" {
    pub fn faiss_IDSelectorRange_imin(arg1: *const FaissIDSelectorRange) -> idx_t;
}
extern "C" {
    pub fn faiss_IDSelectorRange_imax(arg1: *const FaissIDSelectorRange) -> idx_t;
}
extern "C" {
    pub fn faiss_IDSelectorRange_new(
        p_sel: *mut *mut FaissIDSelectorRange,
        imin: idx_t,
        imax: idx_t,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelectorBatch_H {
    _unused: [u8; 0],
}
pub type FaissIDSelectorBatch = FaissIDSelectorBatch_H;
extern "C" {
    pub fn faiss_IDSelectorBatch_nbits(arg1: *const FaissIDSelectorBatch) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IDSelectorBatch_mask(arg1: *const FaissIDSelectorBatch) -> idx_t;
}
extern "C" {
    pub fn faiss_IDSelectorBatch_new(
        p_sel: *mut *mut FaissIDSelectorBatch,
        n: usize,
        indices: *const idx_t,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelectorNot_H {
    _unused: [u8; 0],
}
pub type FaissIDSelectorNot = FaissIDSelectorNot_H;
extern "C" {
    pub fn faiss_IDSelectorNot_new(
        p_sel: *mut *mut FaissIDSelectorNot,
        sel: *const FaissIDSelector,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelectorAnd_H {
    _unused: [u8; 0],
}
pub type FaissIDSelectorAnd = FaissIDSelectorAnd_H;
extern "C" {
    pub fn faiss_IDSelectorAnd_new(
        p_sel: *mut *mut FaissIDSelectorAnd,
        lhs_sel: *const FaissIDSelector,
        rhs_sel: *const FaissIDSelector,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelectorOr_H {
    _unused: [u8; 0],
}
pub type FaissIDSelectorOr = FaissIDSelectorOr_H;
extern "C" {
    pub fn faiss_IDSelectorOr_new(
        p_sel: *mut *mut FaissIDSelectorOr,
        lhs_sel: *const FaissIDSelector,
        rhs_sel: *const FaissIDSelector,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIDSelectorXOr_H {
    _unused: [u8; 0],
}
pub type FaissIDSelectorXOr = FaissIDSelectorXOr_H;
extern "C" {
    pub fn faiss_IDSelectorXOr_new(
        p_sel: *mut *mut FaissIDSelectorXOr,
        lhs_sel: *const FaissIDSelector,
        rhs_sel: *const FaissIDSelector,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissBufferList_H {
    _unused: [u8; 0],
}
pub type FaissBufferList = FaissBufferList_H;
extern "C" {
    pub fn faiss_BufferList_free(obj: *mut FaissBufferList);
}
extern "C" {
    pub fn faiss_BufferList_buffer_size(arg1: *const FaissBufferList) -> usize;
}
extern "C" {
    pub fn faiss_BufferList_wp(arg1: *const FaissBufferList) -> usize;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissBuffer {
    pub ids: *mut idx_t,
    pub dis: *mut f32,
}
extern "C" {
    pub fn faiss_BufferList_append_buffer(bl: *mut FaissBufferList) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_BufferList_new(
        p_bl: *mut *mut FaissBufferList,
        buffer_size: usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_BufferList_add(
        bl: *mut FaissBufferList,
        id: idx_t,
        dis: f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_BufferList_copy_range(
        bl: *mut FaissBufferList,
        ofs: usize,
        n: usize,
        dest_ids: *mut idx_t,
        dest_dis: *mut f32,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissRangeSearchPartialResult_H {
    _unused: [u8; 0],
}
pub type FaissRangeSearchPartialResult = FaissRangeSearchPartialResult_H;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissRangeQueryResult_H {
    _unused: [u8; 0],
}
pub type FaissRangeQueryResult = FaissRangeQueryResult_H;
extern "C" {
    pub fn faiss_RangeQueryResult_qno(arg1: *const FaissRangeQueryResult) -> idx_t;
}
extern "C" {
    pub fn faiss_RangeQueryResult_nres(arg1: *const FaissRangeQueryResult) -> usize;
}
extern "C" {
    pub fn faiss_RangeQueryResult_pres(
        arg1: *const FaissRangeQueryResult,
    ) -> *mut FaissRangeSearchPartialResult;
}
extern "C" {
    pub fn faiss_RangeQueryResult_add(
        qr: *mut FaissRangeQueryResult,
        dis: f32,
        id: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchPartialResult_res(
        arg1: *const FaissRangeSearchPartialResult,
    ) -> *mut FaissRangeSearchResult;
}
extern "C" {
    pub fn faiss_RangeSearchPartialResult_new(
        p_res: *mut *mut FaissRangeSearchPartialResult,
        res_in: *mut FaissRangeSearchResult,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchPartialResult_finalize(
        res: *mut FaissRangeSearchPartialResult,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchPartialResult_set_lims(
        res: *mut FaissRangeSearchPartialResult,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_RangeSearchPartialResult_new_result(
        res: *mut FaissRangeSearchPartialResult,
        qno: idx_t,
        qr: *mut *mut FaissRangeQueryResult,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissDistanceComputer_H {
    _unused: [u8; 0],
}
pub type FaissDistanceComputer = FaissDistanceComputer_H;
extern "C" {
    pub fn faiss_DistanceComputer_set_query(
        dc: *mut FaissDistanceComputer,
        x: *const f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_DistanceComputer_vector_to_query_dis(
        dc: *mut FaissDistanceComputer,
        i: idx_t,
        qd: *mut f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_DistanceComputer_symmetric_dis(
        dc: *mut FaissDistanceComputer,
        i: idx_t,
        j: idx_t,
        vd: *mut f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_DistanceComputer_free(obj: *mut FaissDistanceComputer);
}
pub type FaissSearchParametersIVF = FaissSearchParameters_H;
extern "C" {
    pub fn faiss_SearchParametersIVF_free(obj: *mut FaissSearchParametersIVF);
}
extern "C" {
    pub fn faiss_SearchParametersIVF_cast(
        arg1: *mut FaissSearchParameters,
    ) -> *mut FaissSearchParametersIVF;
}
extern "C" {
    pub fn faiss_SearchParametersIVF_new(
        p_sp: *mut *mut FaissSearchParametersIVF,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_SearchParametersIVF_new_with(
        p_sp: *mut *mut FaissSearchParametersIVF,
        sel: *mut FaissIDSelector,
        nprobe: usize,
        max_codes: usize,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_SearchParametersIVF_sel(
        arg1: *const FaissSearchParametersIVF,
    ) -> *const FaissIDSelector;
}
extern "C" {
    pub fn faiss_SearchParametersIVF_nprobe(arg1: *const FaissSearchParametersIVF) -> usize;
}
extern "C" {
    pub fn faiss_SearchParametersIVF_set_nprobe(arg1: *mut FaissSearchParametersIVF, arg2: usize);
}
extern "C" {
    pub fn faiss_SearchParametersIVF_max_codes(arg1: *const FaissSearchParametersIVF) -> usize;
}
extern "C" {
    pub fn faiss_SearchParametersIVF_set_max_codes(
        arg1: *mut FaissSearchParametersIVF,
        arg2: usize,
    );
}
pub type FaissIndexIVF = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexIVF_free(obj: *mut FaissIndexIVF);
}
extern "C" {
    pub fn faiss_IndexIVF_cast(arg1: *mut FaissIndex) -> *mut FaissIndexIVF;
}
extern "C" {
    pub fn faiss_IndexIVF_nlist(arg1: *const FaissIndexIVF) -> usize;
}
extern "C" {
    pub fn faiss_IndexIVF_nprobe(arg1: *const FaissIndexIVF) -> usize;
}
extern "C" {
    pub fn faiss_IndexIVF_set_nprobe(arg1: *mut FaissIndexIVF, arg2: usize);
}
extern "C" {
    pub fn faiss_IndexIVF_quantizer(arg1: *const FaissIndexIVF) -> *mut FaissIndex;
}
extern "C" {
    pub fn faiss_IndexIVF_quantizer_trains_alone(
        arg1: *const FaissIndexIVF,
    ) -> ::std::os::raw::c_char;
}
extern "C" {
    pub fn faiss_IndexIVF_own_fields(arg1: *const FaissIndexIVF) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVF_set_own_fields(arg1: *mut FaissIndexIVF, arg2: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_IndexIVF_merge_from(
        index: *mut FaissIndexIVF,
        other: *mut FaissIndexIVF,
        add_id: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVF_copy_subset_to(
        index: *const FaissIndexIVF,
        other: *mut FaissIndexIVF,
        subset_type: ::std::os::raw::c_int,
        a1: idx_t,
        a2: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVF_search_preassigned(
        index: *const FaissIndexIVF,
        n: idx_t,
        x: *const f32,
        k: idx_t,
        assign: *const idx_t,
        centroid_dis: *const f32,
        distances: *mut f32,
        labels: *mut idx_t,
        store_pairs: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVF_get_list_size(index: *const FaissIndexIVF, list_no: usize) -> usize;
}
extern "C" {
    pub fn faiss_IndexIVF_make_direct_map(
        index: *mut FaissIndexIVF,
        new_maintain_direct_map: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVF_imbalance_factor(index: *const FaissIndexIVF) -> f64;
}
extern "C" {
    pub fn faiss_IndexIVF_print_stats(index: *const FaissIndexIVF);
}
extern "C" {
    pub fn faiss_IndexIVF_invlists_get_ids(
        index: *const FaissIndexIVF,
        list_no: usize,
        invlist: *mut idx_t,
    );
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissIndexIVFStats {
    pub nq: usize,
    pub nlist: usize,
    pub ndis: usize,
    pub nheap_updates: usize,
    pub quantization_time: f64,
    pub search_time: f64,
}
extern "C" {
    pub fn faiss_IndexIVFStats_reset(stats: *mut FaissIndexIVFStats);
}
extern "C" {
    pub fn faiss_get_indexIVF_stats() -> *mut FaissIndexIVFStats;
}
pub type FaissIndexLSH = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexLSH_free(obj: *mut FaissIndexLSH);
}
extern "C" {
    pub fn faiss_IndexLSH_cast(arg1: *mut FaissIndex) -> *mut FaissIndexLSH;
}
extern "C" {
    pub fn faiss_IndexLSH_nbits(arg1: *const FaissIndexLSH) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexLSH_code_size(arg1: *const FaissIndexLSH) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexLSH_rotate_data(arg1: *const FaissIndexLSH) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexLSH_train_thresholds(arg1: *const FaissIndexLSH) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexLSH_new(
        p_index: *mut *mut FaissIndexLSH,
        d: idx_t,
        nbits: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexLSH_new_with_options(
        p_index: *mut *mut FaissIndexLSH,
        d: idx_t,
        nbits: ::std::os::raw::c_int,
        rotate_data: ::std::os::raw::c_int,
        train_thresholds: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FaissVectorTransform_H {
    _unused: [u8; 0],
}
pub type FaissVectorTransform = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_VectorTransform_free(obj: *mut FaissVectorTransform);
}
extern "C" {
    pub fn faiss_VectorTransform_is_trained(
        arg1: *const FaissVectorTransform,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_VectorTransform_d_in(arg1: *const FaissVectorTransform) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_VectorTransform_d_out(arg1: *const FaissVectorTransform) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_VectorTransform_train(
        vt: *mut FaissVectorTransform,
        n: idx_t,
        x: *const f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_VectorTransform_apply(
        vt: *const FaissVectorTransform,
        n: idx_t,
        x: *const f32,
    ) -> *mut f32;
}
extern "C" {
    pub fn faiss_VectorTransform_apply_noalloc(
        vt: *const FaissVectorTransform,
        n: idx_t,
        x: *const f32,
        xt: *mut f32,
    );
}
extern "C" {
    pub fn faiss_VectorTransform_reverse_transform(
        vt: *const FaissVectorTransform,
        n: idx_t,
        xt: *const f32,
        x: *mut f32,
    );
}
pub type FaissLinearTransform = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_LinearTransform_free(obj: *mut FaissLinearTransform);
}
extern "C" {
    pub fn faiss_LinearTransform_transform_transpose(
        vt: *const FaissLinearTransform,
        n: idx_t,
        y: *const f32,
        x: *mut f32,
    );
}
extern "C" {
    pub fn faiss_LinearTransform_set_is_orthonormal(vt: *mut FaissLinearTransform);
}
extern "C" {
    pub fn faiss_LinearTransform_have_bias(
        arg1: *const FaissLinearTransform,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_LinearTransform_is_orthonormal(
        arg1: *const FaissLinearTransform,
    ) -> ::std::os::raw::c_int;
}
pub type FaissRandomRotationMatrix = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_RandomRotationMatrix_free(obj: *mut FaissRandomRotationMatrix);
}
extern "C" {
    pub fn faiss_RandomRotationMatrix_new_with(
        p_vt: *mut *mut FaissRandomRotationMatrix,
        d_in: ::std::os::raw::c_int,
        d_out: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
pub type FaissPCAMatrix = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_PCAMatrix_free(obj: *mut FaissPCAMatrix);
}
extern "C" {
    pub fn faiss_PCAMatrix_new_with(
        p_vt: *mut *mut FaissPCAMatrix,
        d_in: ::std::os::raw::c_int,
        d_out: ::std::os::raw::c_int,
        eigen_power: f32,
        random_rotation: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_PCAMatrix_eigen_power(arg1: *const FaissPCAMatrix) -> f32;
}
extern "C" {
    pub fn faiss_PCAMatrix_random_rotation(arg1: *const FaissPCAMatrix) -> ::std::os::raw::c_int;
}
pub type FaissITQMatrix = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_ITQMatrix_free(obj: *mut FaissITQMatrix);
}
extern "C" {
    pub fn faiss_ITQMatrix_new_with(
        p_vt: *mut *mut FaissITQMatrix,
        d: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
pub type FaissITQTransform = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_ITQTransform_free(obj: *mut FaissITQTransform);
}
extern "C" {
    pub fn faiss_ITQTransform_new_with(
        p_vt: *mut *mut FaissITQTransform,
        d_in: ::std::os::raw::c_int,
        d_out: ::std::os::raw::c_int,
        do_pca: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_ITQTransform_do_pca(arg1: *const FaissITQTransform) -> ::std::os::raw::c_int;
}
pub type FaissOPQMatrix = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_OPQMatrix_free(obj: *mut FaissOPQMatrix);
}
extern "C" {
    pub fn faiss_OPQMatrix_new_with(
        p_vt: *mut *mut FaissOPQMatrix,
        d: ::std::os::raw::c_int,
        M: ::std::os::raw::c_int,
        d2: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_OPQMatrix_verbose(arg1: *const FaissOPQMatrix) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_OPQMatrix_set_verbose(arg1: *mut FaissOPQMatrix, arg2: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_OPQMatrix_niter(arg1: *const FaissOPQMatrix) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_OPQMatrix_set_niter(arg1: *mut FaissOPQMatrix, arg2: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_OPQMatrix_niter_pq(arg1: *const FaissOPQMatrix) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_OPQMatrix_set_niter_pq(arg1: *mut FaissOPQMatrix, arg2: ::std::os::raw::c_int);
}
pub type FaissRemapDimensionsTransform = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_RemapDimensionsTransform_free(obj: *mut FaissRemapDimensionsTransform);
}
extern "C" {
    pub fn faiss_RemapDimensionsTransform_new_with(
        p_vt: *mut *mut FaissRemapDimensionsTransform,
        d_in: ::std::os::raw::c_int,
        d_out: ::std::os::raw::c_int,
        uniform: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
pub type FaissNormalizationTransform = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_NormalizationTransform_free(obj: *mut FaissNormalizationTransform);
}
extern "C" {
    pub fn faiss_NormalizationTransform_new_with(
        p_vt: *mut *mut FaissNormalizationTransform,
        d: ::std::os::raw::c_int,
        norm: f32,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_NormalizationTransform_norm(arg1: *const FaissNormalizationTransform) -> f32;
}
pub type FaissCenteringTransform = FaissVectorTransform_H;
extern "C" {
    pub fn faiss_CenteringTransform_free(obj: *mut FaissCenteringTransform);
}
extern "C" {
    pub fn faiss_CenteringTransform_new_with(
        p_vt: *mut *mut FaissCenteringTransform,
        d: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexPreTransform = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexPreTransform_free(obj: *mut FaissIndexPreTransform);
}
extern "C" {
    pub fn faiss_IndexPreTransform_cast(arg1: *mut FaissIndex) -> *mut FaissIndexPreTransform;
}
extern "C" {
    pub fn faiss_IndexPreTransform_index(arg1: *const FaissIndexPreTransform) -> *mut FaissIndex;
}
extern "C" {
    pub fn faiss_IndexPreTransform_own_fields(
        arg1: *const FaissIndexPreTransform,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexPreTransform_set_own_fields(
        arg1: *mut FaissIndexPreTransform,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexPreTransform_new(
        p_index: *mut *mut FaissIndexPreTransform,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexPreTransform_new_with(
        p_index: *mut *mut FaissIndexPreTransform,
        index: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexPreTransform_new_with_transform(
        p_index: *mut *mut FaissIndexPreTransform,
        ltrans: *mut FaissVectorTransform,
        index: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexPreTransform_prepend_transform(
        index: *mut FaissIndexPreTransform,
        ltrans: *mut FaissVectorTransform,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexReplicas = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexReplicas_free(obj: *mut FaissIndexReplicas);
}
extern "C" {
    pub fn faiss_IndexReplicas_own_fields(arg1: *const FaissIndexReplicas)
        -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexReplicas_set_own_fields(
        arg1: *mut FaissIndexReplicas,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexReplicas_new(
        p_index: *mut *mut FaissIndexReplicas,
        d: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexReplicas_new_with_options(
        p_index: *mut *mut FaissIndexReplicas,
        d: idx_t,
        threaded: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexReplicas_add_replica(
        index: *mut FaissIndexReplicas,
        replica: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexReplicas_remove_replica(
        index: *mut FaissIndexReplicas,
        replica: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexReplicas_at(
        index: *mut FaissIndexReplicas,
        i: ::std::os::raw::c_int,
    ) -> *mut FaissIndex;
}
#[repr(u32)]
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
pub enum FaissQuantizerType {
    QT_8bit = 0,
    QT_4bit = 1,
    QT_8bit_uniform = 2,
    QT_4bit_uniform = 3,
    QT_fp16 = 4,
    QT_8bit_direct = 5,
    QT_6bit = 6,
}
pub type FaissIndexScalarQuantizer = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexScalarQuantizer_new(
        p_index: *mut *mut FaissIndexScalarQuantizer,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexScalarQuantizer_new_with(
        p_index: *mut *mut FaissIndexScalarQuantizer,
        d: idx_t,
        qt: FaissQuantizerType,
        metric: FaissMetricType,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexScalarQuantizer_cast(arg1: *mut FaissIndex)
        -> *mut FaissIndexScalarQuantizer;
}
extern "C" {
    pub fn faiss_IndexScalarQuantizer_free(obj: *mut FaissIndexScalarQuantizer);
}
pub type FaissIndexIVFScalarQuantizer = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_cast(
        arg1: *mut FaissIndex,
    ) -> *mut FaissIndexIVFScalarQuantizer;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_free(obj: *mut FaissIndexIVFScalarQuantizer);
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_new(
        p_index: *mut *mut FaissIndexIVFScalarQuantizer,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_new_with(
        p_index: *mut *mut FaissIndexIVFScalarQuantizer,
        quantizer: *mut FaissIndex,
        d: idx_t,
        nlist: usize,
        qt: FaissQuantizerType,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_new_with_metric(
        p_index: *mut *mut FaissIndexIVFScalarQuantizer,
        quantizer: *mut FaissIndex,
        d: usize,
        nlist: usize,
        qt: FaissQuantizerType,
        metric: FaissMetricType,
        encode_residual: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_nlist(arg1: *const FaissIndexIVFScalarQuantizer) -> usize;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_nprobe(arg1: *const FaissIndexIVFScalarQuantizer)
        -> usize;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_set_nprobe(
        arg1: *mut FaissIndexIVFScalarQuantizer,
        arg2: usize,
    );
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_quantizer(
        arg1: *const FaissIndexIVFScalarQuantizer,
    ) -> *mut FaissIndex;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_own_fields(
        arg1: *const FaissIndexIVFScalarQuantizer,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_set_own_fields(
        arg1: *mut FaissIndexIVFScalarQuantizer,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_add_core(
        index: *mut FaissIndexIVFScalarQuantizer,
        n: idx_t,
        x: *const f32,
        xids: *const idx_t,
        precomputed_idx: *const idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIVFScalarQuantizer_train_residual(
        index: *mut FaissIndexIVFScalarQuantizer,
        n: idx_t,
        x: *const f32,
    ) -> ::std::os::raw::c_int;
}
pub type FaissIndexShards = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexShards_free(obj: *mut FaissIndexShards);
}
extern "C" {
    pub fn faiss_IndexShards_own_fields(arg1: *const FaissIndexShards) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexShards_set_own_fields(
        arg1: *mut FaissIndexShards,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexShards_successive_ids(arg1: *const FaissIndexShards)
        -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexShards_set_successive_ids(
        arg1: *mut FaissIndexShards,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexShards_new(
        p_index: *mut *mut FaissIndexShards,
        d: idx_t,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexShards_new_with_options(
        p_index: *mut *mut FaissIndexShards,
        d: idx_t,
        threaded: ::std::os::raw::c_int,
        successive_ids: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexShards_add_shard(
        index: *mut FaissIndexShards,
        shard: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexShards_remove_shard(
        index: *mut FaissIndexShards,
        shard: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexShards_at(
        index: *mut FaissIndexShards,
        i: ::std::os::raw::c_int,
    ) -> *mut FaissIndex;
}
pub type FaissIndexIDMap = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexIDMap_own_fields(arg1: *const FaissIndexIDMap) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIDMap_set_own_fields(arg1: *mut FaissIndexIDMap, arg2: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_IndexIDMap_new(
        p_index: *mut *mut FaissIndexIDMap,
        index: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIDMap_cast(arg1: *mut FaissIndex) -> *mut FaissIndexIDMap;
}
extern "C" {
    pub fn faiss_IndexIDMap_id_map(
        index: *mut FaissIndexIDMap,
        p_id_map: *mut *mut idx_t,
        p_size: *mut usize,
    );
}
extern "C" {
    pub fn faiss_IndexIDMap_sub_index(index: *mut FaissIndexIDMap) -> *mut FaissIndex;
}
pub type FaissIndexIDMap2 = FaissIndex_H;
extern "C" {
    pub fn faiss_IndexIDMap2_own_fields(arg1: *const FaissIndexIDMap2) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIDMap2_set_own_fields(
        arg1: *mut FaissIndexIDMap2,
        arg2: ::std::os::raw::c_int,
    );
}
extern "C" {
    pub fn faiss_IndexIDMap2_new(
        p_index: *mut *mut FaissIndexIDMap2,
        index: *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIDMap2_construct_rev_map(
        index: *mut FaissIndexIDMap2,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_IndexIDMap2_cast(arg1: *mut FaissIndex) -> *mut FaissIndexIDMap2;
}
extern "C" {
    pub fn faiss_IndexIDMap2_id_map(
        index: *mut FaissIndexIDMap2,
        p_id_map: *mut *mut idx_t,
        p_size: *mut usize,
    );
}
extern "C" {
    pub fn faiss_IndexIDMap2_sub_index(index: *mut FaissIndexIDMap2) -> *mut FaissIndex;
}
pub type FILE = [u64; 27usize];
extern "C" {
    pub fn faiss_clone_index(
        arg1: *const FaissIndex,
        p_out: *mut *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
#[repr(i32)]
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
pub enum FaissErrorCode {
    OK = 0,
    UNKNOWN_EXCEPT = -1,
    FAISS_EXCEPT = -2,
    STD_EXCEPT = -4,
}
extern "C" {
    pub fn faiss_get_last_error() -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn faiss_index_factory(
        p_index: *mut *mut FaissIndex,
        d: ::std::os::raw::c_int,
        description: *const ::std::os::raw::c_char,
        metric: FaissMetricType,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_write_index(idx: *const FaissIndex, f: *mut FILE) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_write_index_fname(
        idx: *const FaissIndex,
        fname: *const ::std::os::raw::c_char,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_read_index(
        f: *mut FILE,
        io_flags: ::std::os::raw::c_int,
        p_out: *mut *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_read_index_fname(
        fname: *const ::std::os::raw::c_char,
        io_flags: ::std::os::raw::c_int,
        p_out: *mut *mut FaissIndex,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_write_index_binary(
        idx: *const FaissIndexBinary,
        f: *mut FILE,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_write_index_binary_fname(
        idx: *const FaissIndexBinary,
        fname: *const ::std::os::raw::c_char,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_read_index_binary(
        f: *mut FILE,
        io_flags: ::std::os::raw::c_int,
        p_out: *mut *mut FaissIndexBinary,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_read_index_binary_fname(
        fname: *const ::std::os::raw::c_char,
        io_flags: ::std::os::raw::c_int,
        p_out: *mut *mut FaissIndexBinary,
    ) -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_pairwise_L2sqr(
        d: i64,
        nq: i64,
        xq: *const f32,
        nb: i64,
        xb: *const f32,
        dis: *mut f32,
        ldq: i64,
        ldb: i64,
        ldd: i64,
    );
}
extern "C" {
    pub fn faiss_pairwise_L2sqr_with_defaults(
        d: i64,
        nq: i64,
        xq: *const f32,
        nb: i64,
        xb: *const f32,
        dis: *mut f32,
    );
}
extern "C" {
    pub fn faiss_fvec_inner_products_ny(
        ip: *mut f32,
        x: *const f32,
        y: *const f32,
        d: usize,
        ny: usize,
    );
}
extern "C" {
    pub fn faiss_fvec_L2sqr_ny(dis: *mut f32, x: *const f32, y: *const f32, d: usize, ny: usize);
}
extern "C" {
    pub fn faiss_fvec_norm_L2sqr(x: *const f32, d: usize) -> f32;
}
extern "C" {
    pub fn faiss_fvec_norms_L2(norms: *mut f32, x: *const f32, d: usize, nx: usize);
}
extern "C" {
    pub fn faiss_fvec_norms_L2sqr(norms: *mut f32, x: *const f32, d: usize, nx: usize);
}
extern "C" {
    pub fn faiss_fvec_renorm_L2(d: usize, nx: usize, x: *mut f32);
}
extern "C" {
    pub fn faiss_set_distance_compute_blas_threshold(value: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_get_distance_compute_blas_threshold() -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_set_distance_compute_blas_query_bs(value: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_get_distance_compute_blas_query_bs() -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_set_distance_compute_blas_database_bs(value: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_get_distance_compute_blas_database_bs() -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn faiss_set_distance_compute_min_k_reservoir(value: ::std::os::raw::c_int);
}
extern "C" {
    pub fn faiss_get_distance_compute_min_k_reservoir() -> ::std::os::raw::c_int;
}