From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57909) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g71rD-0002XF-LB for qemu-devel@nongnu.org; Mon, 01 Oct 2018 13:19:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g71rB-0007Ja-Pb for qemu-devel@nongnu.org; Mon, 01 Oct 2018 13:19:43 -0400 From: Kevin Wolf Date: Mon, 1 Oct 2018 19:18:50 +0200 Message-Id: <20181001171901.11004-13-kwolf@redhat.com> In-Reply-To: <20181001171901.11004-1-kwolf@redhat.com> References: <20181001171901.11004-1-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 12/23] include: Add a lookup table of sizes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org From: Leonid Bloch 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 Reviewed-by: Alberto Garcia Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- 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) +#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 -- 2.13.6