Adding a lookup table for the powers of two, with the appropriate size prefixes. This is needed when a size has to be stringified, in which case something like '(1 * KiB)' would become a literal '(1 * (1L << 10))' string. Powers of two are used very often for sizes, so such a table will also make it easier and more intuitive to write them. This table is generatred using the following AWK script: 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); } } Signed-off-by: Leonid Bloch <lbloch@janustech.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
|
|
* 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)
|
|
|
|
#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
|