/usr/include/flint/double_extras.h is in libflint-dev 2.5.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | /*=============================================================================
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) 2012 Fredrik Johansson
******************************************************************************/
#ifndef DOUBLE_EXTRAS_H
#define DOUBLE_EXTRAS_H
#ifdef DOUBLE_EXTRAS_INLINES_C
#define DOUBLE_EXTRAS_INLINE FLINT_DLL
#else
#define DOUBLE_EXTRAS_INLINE static __inline__
#endif
#undef ulong
#define ulong ulongxx /* interferes with system includes */
#include <math.h>
#undef ulong
#include <float.h>
#include <gmp.h>
#include "flint.h"
#define ulong mp_limb_t
#ifdef __cplusplus
extern "C" {
#endif
#define D_BITS 53
#define D_EPS 2.2204460492503130808e-16
#define D_INF HUGE_VAL
#define D_NAN (HUGE_VAL - HUGE_VAL)
FLINT_DLL double d_randtest(flint_rand_t state);
FLINT_DLL double d_randtest_signed(flint_rand_t state, slong minexp, slong maxexp);
FLINT_DLL double d_randtest_special(flint_rand_t state, slong minexp, slong maxexp);
DOUBLE_EXTRAS_INLINE
double d_polyval(const double * poly, int len, double x)
{
double t;
int i;
for (t = poly[len-1], i = len-2; i >= 0; i--)
t = poly[i] + x * t;
return t;
}
FLINT_DLL double d_lambertw(double x);
FLINT_DLL int d_is_nan(double x);
FLINT_DLL double d_log2(double x);
#ifdef __cplusplus
}
#endif
#endif
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