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From c2b9a080a8c98bb536ce97c47efda84538458bd0 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Tue, 19 Feb 2019 17:00:15 +0100
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Subject: [PATCH 14/23] include: Add a lookup table of sizes
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20190219170023.27826-6-kwolf@redhat.com>
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Patchwork-id: 84545
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O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 05/13] include: Add a lookup table of sizes
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Bugzilla: 1656913
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Leonid Bloch <lbloch@janustech.com>
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Adding a lookup table for the powers of two, with the appropriate size
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prefixes. This is needed when a size has to be stringified, in which
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case something like '(1 * KiB)' would become a literal '(1 * (1L << 10))'
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string. Powers of two are used very often for sizes, so such a table
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will also make it easier and more intuitive to write them.
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This table is generatred using the following AWK script:
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BEGIN {
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suffix="KMGTPE";
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for(i=10; i<64; i++) {
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val=2**i;
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s=substr(suffix, int(i/10), 1);
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n=2**(i%10);
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pad=21-int(log(n)/log(10));
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printf("#define S_%d%siB %*d\n", n, s, pad, val);
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}
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}
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Signed-off-by: Leonid Bloch <lbloch@janustech.com>
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Reviewed-by: Alberto Garcia <berto@igalia.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 540b8492618ebbe98e7462bd7d31361b8cb10a05)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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include/qemu/units.h | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 55 insertions(+)
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diff --git a/include/qemu/units.h b/include/qemu/units.h
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index 692db3f..68a7758 100644
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--- a/include/qemu/units.h
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+++ b/include/qemu/units.h
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@@ -17,4 +17,59 @@
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#define PiB (INT64_C(1) << 50)
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#define EiB (INT64_C(1) << 60)
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+#define S_1KiB 1024
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+#define S_2KiB 2048
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+#define S_4KiB 4096
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+#define S_8KiB 8192
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+#define S_16KiB 16384
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+#define S_32KiB 32768
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+#define S_64KiB 65536
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+#define S_128KiB 131072
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+#define S_256KiB 262144
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+#define S_512KiB 524288
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+#define S_1MiB 1048576
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+#define S_2MiB 2097152
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+#define S_4MiB 4194304
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+#define S_8MiB 8388608
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+#define S_16MiB 16777216
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+#define S_32MiB 33554432
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+#define S_64MiB 67108864
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+#define S_128MiB 134217728
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+#define S_256MiB 268435456
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+#define S_512MiB 536870912
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+#define S_1GiB 1073741824
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+#define S_2GiB 2147483648
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+#define S_4GiB 4294967296
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+#define S_8GiB 8589934592
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+#define S_16GiB 17179869184
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+#define S_32GiB 34359738368
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+#define S_64GiB 68719476736
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+#define S_128GiB 137438953472
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+#define S_256GiB 274877906944
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+#define S_512GiB 549755813888
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+#define S_1TiB 1099511627776
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+#define S_2TiB 2199023255552
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+#define S_4TiB 4398046511104
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+#define S_8TiB 8796093022208
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+#define S_16TiB 17592186044416
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+#define S_32TiB 35184372088832
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+#define S_64TiB 70368744177664
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+#define S_128TiB 140737488355328
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+#define S_256TiB 281474976710656
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+#define S_512TiB 562949953421312
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+#define S_1PiB 1125899906842624
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+#define S_2PiB 2251799813685248
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+#define S_4PiB 4503599627370496
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+#define S_8PiB 9007199254740992
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+#define S_16PiB 18014398509481984
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+#define S_32PiB 36028797018963968
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+#define S_64PiB 72057594037927936
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+#define S_128PiB 144115188075855872
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+#define S_256PiB 288230376151711744
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+#define S_512PiB 576460752303423488
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+#define S_1EiB 1152921504606846976
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+#define S_2EiB 2305843009213693952
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+#define S_4EiB 4611686018427387904
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+#define S_8EiB 9223372036854775808
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+
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#endif
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--
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1.8.3.1
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