kolibrios-fun/contrib/sdk/sources/newlib/libc/stdlib/__ten_mu.c
Sergey Semyonov (Serge) 7315bb05c0 newlib-2.1.0
git-svn-id: svn://kolibrios.org@4921 a494cfbc-eb01-0410-851d-a64ba20cac60
2014-05-10 22:12:19 +00:00

25 lines
449 B
C

/*
* [atw] multiply 64 bit accumulator by 10 and add digit.
* The KA/CA way to do this should be to use
* a 64-bit integer internally and use "adjust" to
* convert it to float at the end of processing.
*/
#include <_ansi.h>
#include "std.h"
int
_DEFUN (__ten_mul, (acc, digit),
double *acc _AND
int digit)
{
/*
* [atw] Crude, but effective (at least on a KB)...
*/
*acc *= 10;
*acc += digit;
return 0; /* no overflow */
}