Leaked source code of windows server 2003
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46 lines
1.0 KiB

/* Long to ASCII conversion routine - used by print, and those programs
* which want to do low level formatted output without hauling in a great
* deal of extraneous code. This will convert a long value to an ascii
* string in any radix from 2 - 16.
* RETURNS - the number of characters in the converted buffer.
*/
static char digits[] = {
'0', '1', '2', '3', '4',
'5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'
};
#define BITS_IN_LONG (8*sizeof(long))
int zltoa(long aval, register char *buf, int base)
{
/*
* if unsigned long wont work on your host, you will probably have
* to use signed long and accept this as not working for negative
* numbers.
*/
register unsigned long val;
register char *p;
char tbuf[BITS_IN_LONG];
int size = 0;
p = tbuf;
*p++ = '\0';
if (aval < 0 && base == 10)
{
*buf++ = '-';
val = -aval;
size++;
}
else
val = aval;
do {
*p++ = digits[val % base];
}
while (val /= base);
while ((*buf++ = *--p) != 0)
++size;
return(size);
}