This file is indexed.

/usr/include/flint/fmpq_vec.h is in libflint-dev 2.5.2-3.

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The actual contents of the file can be viewed below.

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/*=============================================================================

    This file is part of FLINT.

    FLINT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    FLINT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with FLINT; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

=============================================================================*/
/******************************************************************************

    Copyright (C) 2014 Abhinav Baid

******************************************************************************/

#ifndef FMPQ_VEC_H
#define FMPQ_VEC_H

#ifdef FMPQ_VEC_INLINES_C
#define FMPQ_VEC_INLINE FLINT_DLL
#else
#define FMPQ_VEC_INLINE static __inline__
#endif

#include <gmp.h>
#include "fmpq.h"
#include "flint.h"

#ifdef __cplusplus
 extern "C" {
#endif

/*  Randomisation  ***********************************************************/

FLINT_DLL void _fmpq_vec_randtest(fmpq * f, flint_rand_t state, 
                        slong len, mp_bitcnt_t bits);

/*  Conversions  *************************************************************/

FLINT_DLL void _fmpq_vec_set_fmpz_vec(fmpq * res, const fmpz * vec, slong len);

/*  Dot product  **************************************************/

FLINT_DLL void _fmpq_vec_dot(fmpq_t res, const fmpq * vec1, const fmpq * vec2, slong len);

#ifdef __cplusplus
}
#endif

#endif