Quoting Yann POUPET <[EMAIL PROTECTED]>:
1. What are the needs ?
2. What is the best way to do this ?
3. Where should it be done ?
The most convenient and flexible way to accomplish this might be to add a new
conversion specifier to printf(), sprintf(), and friends. Perhaps "%m"
and "%M"
would be good choices, indicating that we want a scaled string that includes
*m*etric prefixes (K, M, G, etc for "%m"; Kilo, Mega, Giga, etc for "%M").
Some examples:
printf("%mB", 42) => "42.0 B"
printf("%mB", 42 * 1024) => "42.0 KB"
printf("%mB", 42 * 1024 * 1024) => "42.0 MB"
printf("%mB", 42 * 1024 * 1024 * 1024) => "42.0 GB"
printf("%Mbytes", 42) => "42.0 bytes"
printf("%Mbytes", 42 * 1024) => "42.0 Kilobytes"
printf("%Mbytes", 42 * 1024 * 1024) => "42.0 Megabytes"
printf("%Mbytes", 42 * 1024 * 1024 * 1024) => "42.0 Gigabytes"
The default precision would be three significant figures, since that
seems to be
the standard used in all the examples you provided. A different
precision could
be specified with a decimal string between the "%" and the "m", like so:
printf("%0Mbytes", 42) => "42 bytes"
printf("%8Mbytes", 1000000000) => "0.93132257 Gigabytes"
Note that the alternate precisions don't always make sense since we're working
in powers of 1024 and not in powers of 10.
Just a thought...
--
Clay McClure
http://daemons.net/~clay
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