include/qemu/units.h

   1 /*
   2  * IEC binary prefixes definitions
   3  *
   4  * Copyright (C) 2015 Nikunj A Dadhania, IBM Corporation
   5  * Copyright (C) 2018 Philippe Mathieu-Daudé <f4bug@amsat.org>
   6  *
   7  * SPDX-License-Identifier: GPL-2.0-or-later
   8  */
   9
  10 #ifndef QEMU_UNITS_H
  11 #define QEMU_UNITS_H
  12
  13 #define KiB     (INT64_C(1) << 10)
  14 #define MiB     (INT64_C(1) << 20)
  15 #define GiB     (INT64_C(1) << 30)
  16 #define TiB     (INT64_C(1) << 40)
  17 #define PiB     (INT64_C(1) << 50)
  18 #define EiB     (INT64_C(1) << 60)
  19
  20 /*
  21  * The following lookup table is intended to be used when a literal string of
  22  * the number of bytes is required (for example if it needs to be stringified).
  23  * It can also be used for generic shortcuts of power-of-two sizes.
  24  * This table is generated using the AWK script below:
  25  *
  26  *  BEGIN {
  27  *      suffix="KMGTPE";
  28  *      for(i=10; i<64; i++) {
  29  *          val=2**i;
  30  *          s=substr(suffix, int(i/10), 1);
  31  *          n=2**(i%10);
  32  *          pad=21-int(log(n)/log(10));
  33  *          printf("#define S_%d%siB %*d\n", n, s, pad, val);
  34  *      }
  35  *  }
  36  */
  37
  38 #define S_1KiB                  1024
  39 #define S_2KiB                  2048
  40 #define S_4KiB                  4096
  41 #define S_8KiB                  8192
  42 #define S_16KiB                16384
  43 #define S_32KiB                32768
  44 #define S_64KiB                65536
  45 #define S_128KiB              131072
  46 #define S_256KiB              262144
  47 #define S_512KiB              524288
  48 #define S_1MiB               1048576
  49 #define S_2MiB               2097152
  50 #define S_4MiB               4194304
  51 #define S_8MiB               8388608
  52 #define S_16MiB             16777216
  53 #define S_32MiB             33554432
  54 #define S_64MiB             67108864
  55 #define S_128MiB           134217728
  56 #define S_256MiB           268435456
  57 #define S_512MiB           536870912
  58 #define S_1GiB            1073741824
  59 #define S_2GiB            2147483648
  60 #define S_4GiB            4294967296
  61 #define S_8GiB            8589934592
  62 #define S_16GiB          17179869184
  63 #define S_32GiB          34359738368
  64 #define S_64GiB          68719476736
  65 #define S_128GiB        137438953472
  66 #define S_256GiB        274877906944
  67 #define S_512GiB        549755813888
  68 #define S_1TiB         1099511627776
  69 #define S_2TiB         2199023255552
  70 #define S_4TiB         4398046511104
  71 #define S_8TiB         8796093022208
  72 #define S_16TiB       17592186044416
  73 #define S_32TiB       35184372088832
  74 #define S_64TiB       70368744177664
  75 #define S_128TiB     140737488355328
  76 #define S_256TiB     281474976710656
  77 #define S_512TiB     562949953421312
  78 #define S_1PiB      1125899906842624
  79 #define S_2PiB      2251799813685248
  80 #define S_4PiB      4503599627370496
  81 #define S_8PiB      9007199254740992
  82 #define S_16PiB    18014398509481984
  83 #define S_32PiB    36028797018963968
  84 #define S_64PiB    72057594037927936
  85 #define S_128PiB  144115188075855872
  86 #define S_256PiB  288230376151711744
  87 #define S_512PiB  576460752303423488
  88 #define S_1EiB   1152921504606846976
  89 #define S_2EiB   2305843009213693952
  90 #define S_4EiB   4611686018427387904
  91 #define S_8EiB   9223372036854775808
  92
  93 #endif