1/* Generate data for fpioconst.c.
2 Copyright (C) 2012-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <inttypes.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <gmp.h>
24#include <stdint.h>
25
26int
27main (void)
28{
29 FILE *out32 = fopen ("fpioconst-32", "w");
30 if (out32 == NULL)
31 abort ();
32 FILE *out64 = fopen ("fpioconst-64", "w");
33 if (out64 == NULL)
34 abort ();
35 FILE *outtable = fopen ("fpioconst-table", "w");
36 if (outtable == NULL)
37 abort ();
38 mpz_t p;
39 mpz_init (p);
40 for (int i = 0; i <= 14; i++)
41 {
42 int j = 1 << i;
43 mpz_ui_pow_ui (p, 10, j - 1);
44 int exp_m = mpz_sizeinbase (p, 2);
45 mpz_ui_pow_ui (p, 10, j);
46 int exp_p = mpz_sizeinbase (p, 2);
47 int size32 = 2 + (exp_p + 31) / 32;
48 int size64 = 1 + (exp_p + 63) / 64;
49 uint32_t data32[size32];
50 uint64_t data64[size64];
51 memset (data32, 0, sizeof data32);
52 memset (data64, 0, sizeof data64);
53 mpz_export (data32 + 2, NULL, -1, 4, 0, 0, p);
54 mpz_export (data64 + 1, NULL, -1, 8, 0, 0, p);
55 if (i == 0)
56 {
57 fprintf (out32, "#define TENS_P%d_IDX\t0\n", i);
58 fprintf (out64, "#define TENS_P%d_IDX\t0\n", i);
59 }
60 else
61 {
62 fprintf (out32, "#define TENS_P%d_IDX\t"
63 "(TENS_P%d_IDX + TENS_P%d_SIZE)\n",
64 i, i - 1, i - 1);
65 fprintf (out64, "#define TENS_P%d_IDX\t"
66 "(TENS_P%d_IDX + TENS_P%d_SIZE)\n",
67 i, i - 1, i - 1);
68 }
69 fprintf (out32, "#define TENS_P%d_SIZE\t%d\n", i, size32);
70 fprintf (out64, "#define TENS_P%d_SIZE\t%d\n", i, size64);
71 for (int k = 0; k < size32; k++)
72 {
73 if (k == 0)
74 fprintf (out32, " [TENS_P%d_IDX] = ", i);
75 else if (k % 6 == 5)
76 fprintf (out32, "\n ");
77 else
78 fprintf (out32, " ");
79 fprintf (out32, "0x%08"PRIx32",", data32[k]);
80 }
81 for (int k = 0; k < size64; k++)
82 {
83 if (k == 0)
84 fprintf (out64, " [TENS_P%d_IDX] = ", i);
85 else if (k % 3 == 2)
86 fprintf (out64, "\n ");
87 else
88 fprintf (out64, " ");
89 fprintf (out64, "0x%016"PRIx64"ull,", data64[k]);
90 }
91 fprintf (out32, "\n\n");
92 fprintf (out64, "\n\n");
93 const char *t = (i >= 10 ? "\t" : "\t\t");
94 if (i == 0)
95 fprintf (outtable, " { TENS_P%d_IDX, TENS_P%d_SIZE,%s%d,\t },\n",
96 i, i, t, exp_p);
97 else
98 fprintf (outtable, " { TENS_P%d_IDX, TENS_P%d_SIZE,%s%d,\t%5d },\n",
99 i, i, t, exp_p, exp_m);
100 }
101 if (fclose (out32) != 0)
102 abort ();
103 if (fclose (out64) != 0)
104 abort ();
105 if (fclose (outtable) != 0)
106 abort ();
107 return 0;
108}
109

source code of glibc/stdlib/gen-fpioconst.c