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/*
* tostr.h - DTrace To-String include file.
*
* $Id: tostr.h 36 2007-09-15 06:51:18Z brendan $
*
* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at Docs/cddl1.txt
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* 16-Sep-2007 Brendan Gregg Created this.
*/
/*
* NUM_TO_STR(n) - takes a number and returns a string with a prefix,
* intended to fit withen 6 chars.
*
* Input Output
* 0 0
* 1 1
* 10 10
* 999 999
* 1000 1.0K
* 1100 1.1K
* 10000 10.0K
* 999999 999.0K
* 1000000 1.0M
* 10000000 10.0M
* 999999999 999.9M
*/
#define NUM_TO_STR(n) \
n >= 1000000 ? \
strjoin(strjoin(strjoin(lltostr(n / 1000000), "."), \
lltostr((n % 1000000) / 100000)), "M") : n >= 1000 ? \
strjoin(strjoin(strjoin(lltostr(n / 1000), "."), \
lltostr((n % 1000) / 100)), "K") : lltostr(n)
/*
* BYTES_TO_STR(n) - takes a byte count and returns a string with a prefix,
* intended to fit withen 6 chars.
*
* Input Output
* 0 0
* 1 1
* 10 10
* 999 0.9K
* 1000 0.9K
* 1024 1.0K
* 10240 10.0K
* 1000000 976.5K
* 1048576 1.0M
* 1000000000 953.6M
*/
#define BYTES_TO_STR(n) \
n >= 1024000 ? \
strjoin(strjoin(strjoin(lltostr(n / 1048576), "."), \
lltostr((n % 1048576) / 104858)), "M") : n >= 1000 ? \
strjoin(strjoin(strjoin(lltostr(n / 1024), "."), \
lltostr((n % 1024) / 103)), "K") : lltostr(n)
/*
* US_TO_STR(n) - takes microseconds and returns a string with a prefix,
* intended to fit withen 6 chars.
*
* Input Output
* 0 0
* 1 1u
* 10 10u
* 999 999u
* 1000 1.0m
* 1100 1.1m
* 10000 10.0m
* 999999 999.0m
*/
#define US_TO_STR(n) \
n == 0 ? "0" : n >= 1000 ? \
strjoin(lltostr(n / 1000), "m") : strjoin(lltostr(n), "u")
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