Leaked source code of windows server 2003
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54 lines
1.2 KiB

#include "rcpptype.h"
/* 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 WCHAR digits[] = {
L'0', L'1', L'2', L'3', L'4',
L'5', L'6', L'7', L'8', L'9',
L'a', L'b', L'c', L'd', L'e', L'f'
};
#define BITS_IN_LONG (8*sizeof(long))
int
zltoa(
long aval,
register WCHAR *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 WCHAR *p;
WCHAR tbuf[BITS_IN_LONG];
int size = 0;
p = tbuf;
*p++ = L'\0';
if (aval < 0 && base == 10) {
*buf++ = L'-';
val = -aval;
size++;
} else {
val = aval;
}
do {
*p++ = digits[val % base];
} while (val /= base);
while ((*buf++ = *--p) != 0) {
++size;
}
return(size);
}