/usr/include/flint/perm.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 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | /*=============================================================================
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) 2011 Sebastian Pancratz
******************************************************************************/
#ifndef PERM_H
#define PERM_H
#ifdef PERM_INLINES_C
#define PERM_INLINE FLINT_DLL
#else
#define PERM_INLINE static __inline__
#endif
#undef ulong
#define ulong ulongxx /* interferes with system includes */
#include <stdlib.h>
#include <stdio.h>
#undef ulong
#include <gmp.h>
#define ulong mp_limb_t
#include "flint.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Memory management *********************************************************/
PERM_INLINE slong * _perm_init(slong n)
{
slong i, *vec;
vec = (slong *) flint_malloc(n * sizeof(slong));
if (!vec)
{
flint_printf("ERROR (_perm_init).\n\n");
abort();
}
for (i = 0; i < n; i++)
vec[i] = i;
return vec;
}
PERM_INLINE void _perm_clear(slong * vec)
{
flint_free(vec);
}
/* Assignment ****************************************************************/
PERM_INLINE slong _perm_equal(const slong *vec1, const slong *vec2, slong n)
{
slong i;
for (i = 0; i < n; i++)
if (vec1[i] != vec2[i])
return 0;
return 1;
}
PERM_INLINE void _perm_set(slong *res, const slong *vec, slong n)
{
slong i;
for (i = 0; i < n; i++)
res[i] = vec[i];
}
PERM_INLINE void _perm_set_one(slong *vec, slong n)
{
slong i;
for (i = 0; i < n; i++)
vec[i] = i;
}
PERM_INLINE void
_perm_inv(slong *res, const slong *vec, slong n)
{
slong i;
if (res == vec)
{
slong *t = (slong *) flint_malloc(n * sizeof(slong));
if (!t)
{
flint_printf("ERROR (_perm_inv).\n\n");
abort();
}
for (i = 0; i < n; i++)
t[i] = vec[i];
for (i = 0; i < n; i++)
res[t[i]] = i;
flint_free(t);
}
else
{
for (i = 0; i < n; i++)
res[vec[i]] = i;
}
}
/* Composition ***************************************************************/
PERM_INLINE void
_perm_compose(slong *res, const slong *vec1, const slong *vec2, slong n)
{
slong i;
if (res == vec1)
{
slong *t = (slong *) flint_malloc(n * sizeof(slong));
for (i = 0; i < n; i++)
t[i] = vec1[i];
for (i = 0; i < n; i++)
res[i] = t[vec2[i]];
flint_free(t);
}
else
{
for (i = 0; i < n; i++)
res[i] = vec1[vec2[i]];
}
}
/* Randomisation *************************************************************/
FLINT_DLL int _perm_randtest(slong * vec, slong n, flint_rand_t state);
/* Parity ********************************************************************/
FLINT_DLL int _perm_parity(const slong * vec, slong n);
/* Input and output **********************************************************/
PERM_INLINE int _long_vec_print(const slong * vec, slong len)
{
slong i;
flint_printf("%wd", len);
if (len > 0)
{
flint_printf(" ");
for (i = 0; i < len; i++)
flint_printf(" %wd", vec[i]);
}
return 1;
}
PERM_INLINE int _perm_print(const slong * vec, slong n)
{
slong i;
flint_printf("%wd", n);
if (n > 0)
{
flint_printf(" ");
for (i = 0; i < n; i++)
flint_printf(" %wd", vec[i]);
}
return 1;
}
#ifdef __cplusplus
}
#endif
#endif
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