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faiss.h
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the CC-by-NC license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
// Copyright 2004-present Facebook. All Rights Reserved
// -*- c++ -*-
// This is the main internal include file for Faiss. It defines
// macros and some machine-specific functions shared across .cpp files
#ifndef FAISS_h
#define FAISS_h
#include <stdint.h>
#include <stdlib.h>
#include <stddef.h>
#ifndef __SSE2__
#error "SSE optimized distance computations not set"
#endif
#ifdef _OPENMP
#include <omp.h>
#define SET_NT(ntlim) \
size_t nt = omp_get_max_threads(); \
if (nt > ntlim) nt = ntlim;
#else
#warning "OpenMP is NOT activated"
#define SET_NT(ntlim) size_t nt = 0; nt++;
#endif
/* This is to prevent warning by the linter (FINTEGER is defined externally) */
#ifndef FINTEGER
#define FINTEGER long
#endif
#endif