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Subject: [Qemu-devel] [PULL 12/23] include: Add a lookup table of sizes
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From: Leonid Bloch <lbloch@janustech.com>
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=3D"KMGTPE";
for(i=3D10; i<64; i++) {
val=3D2**i;
s=3Dsubstr(suffix, int(i/10), 1);
n=3D2**(i%10);
pad=3D21-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>
---
include/qemu/units.h | 55 ++++++++++++++++++++++++++++++++++++++++++++++++=
++++
1 file changed, 55 insertions(+)
diff --git a/include/qemu/units.h b/include/qemu/units.h
index 692db3fbb2..68a7758650 100644
--- a/include/qemu/units.h
+++ b/include/qemu/units.h
@@ -17,4 +17,59 @@
#define PiB (INT64_C(1) << 50)
#define EiB (INT64_C(1) << 60)
=20
+#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
--=20
2.13.6