qemu-e2k/include/qemu/units.h

/*
 * IEC binary prefixes definitions
 *
 * Copyright (C) 2015 Nikunj A Dadhania, IBM Corporation
 * Copyright (C) 2018 Philippe Mathieu-Daudé <f4bug@amsat.org>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#ifndef QEMU_UNITS_H
#define QEMU_UNITS_H

#define KiB     (INT64_C(1) << 10)
#define MiB     (INT64_C(1) << 20)
#define GiB     (INT64_C(1) << 30)
#define TiB     (INT64_C(1) << 40)
#define PiB     (INT64_C(1) << 50)
#define EiB     (INT64_C(1) << 60)

/*
 * The following lookup table is intended to be used when a literal string of
 * the number of bytes is required (for example if it needs to be stringified).
 * It can also be used for generic shortcuts of power-of-two sizes.
 * This table is generated using the AWK script below:
 *
 *  BEGIN {
 *      suffix="KMGTPE";
 *      for(i=10; i<64; i++) {
 *          val=2**i;
 *          s=substr(suffix, int(i/10), 1);
 *          n=2**(i%10);
 *          pad=21-int(log(n)/log(10));
 *          printf("#define S_%d%siB %*d\n", n, s, pad, val);
 *      }
 *  }
 */

#define S_1KiB                  1024
#define S_2KiB                  2048
#define S_4KiB                  4096
#define S_8KiB                  8192
#define S_16KiB                16384
#define S_32KiB                32768
#define S_64KiB                65536
#define S_128KiB              131072
#define S_256KiB              262144
#define S_512KiB              524288
#define S_1MiB               1048576
#define S_2MiB               2097152
#define S_4MiB               4194304
#define S_8MiB               8388608
#define S_16MiB             16777216
#define S_32MiB             33554432
#define S_64MiB             67108864
#define S_128MiB           134217728
#define S_256MiB           268435456
#define S_512MiB           536870912
#define S_1GiB            1073741824
#define S_2GiB            2147483648
#define S_4GiB            4294967296
#define S_8GiB            8589934592
#define S_16GiB          17179869184
#define S_32GiB          34359738368
#define S_64GiB          68719476736
#define S_128GiB        137438953472
#define S_256GiB        274877906944
#define S_512GiB        549755813888
#define S_1TiB         1099511627776
#define S_2TiB         2199023255552
#define S_4TiB         4398046511104
#define S_8TiB         8796093022208
#define S_16TiB       17592186044416
#define S_32TiB       35184372088832
#define S_64TiB       70368744177664
#define S_128TiB     140737488355328
#define S_256TiB     281474976710656
#define S_512TiB     562949953421312
#define S_1PiB      1125899906842624
#define S_2PiB      2251799813685248
#define S_4PiB      4503599627370496
#define S_8PiB      9007199254740992
#define S_16PiB    18014398509481984
#define S_32PiB    36028797018963968
#define S_64PiB    72057594037927936
#define S_128PiB  144115188075855872
#define S_256PiB  288230376151711744
#define S_512PiB  576460752303423488
#define S_1EiB   1152921504606846976
#define S_2EiB   2305843009213693952
#define S_4EiB   4611686018427387904
#define S_8EiB   9223372036854775808

#endif