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import cinit from unix.schottelius.org

Browse source 
Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org>
This commit is contained in:
Nico Schottelius 2009-09-16 12:53:45 +02:00
commit 423ba10303
13396 changed files with 269468 additions and 0 deletions
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42
software/cinit/browse_source/cinit-0.0.4/old/cnt_digits.c Normal file
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/*
* (c) 2005 Nico Schottelius (nico-linux at schottelius.org)
* cinit.c
* part of cLinux/cinit
*/
/* this code is stolen from gpm */
/* what's the english name for potenz ? */
int x_high_y(int base, int pot_y)
{
int val = 1;
if(pot_y == 0) val = 1;
else if(pot_y < 0) val = 0; /* ugly hack ;) */
else while(pot_y > 0) {
val = val * base;
pot_y--;
}
return val;
}
/* return characters needed to display int */
int cnt_digits(int number)
{
/* 0-9 = 1 10^0 <-> (10^1)-1
* 10 - 99 = 2 10^1 <-> (10^2)-1
* 100 - 999 = 3 10^2 <-> (10^3)-1
* 1000 - 9999 = 4 ... */
int ret = 0, num = 0;
/* non negative, please */
if(number < 0) number *= -1;
else if(number == 0) ret = 1;
else while(number > num) {
ret++;
num = (x_high_y(10,ret) - 1);
}
return(ret);
}