File: double_extras.h

package info (click to toggle)
flint 2.5.2-19
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 30,308 kB
  • sloc: ansic: 289,367; cpp: 11,210; python: 1,280; sh: 649; makefile: 283
file content (82 lines) | stat: -rw-r--r-- 2,193 bytes parent folder | download | duplicates (6)
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