linux/arch/h8300/lib/ashldi3.c
Yoshinori Sato a71a29de4c h8300: library functions
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2015-06-23 13:35:54 +09:00

25 lines
430 B
C

#include "libgcc.h"
DWtype
__ashldi3(DWtype u, word_type b)
{
const DWunion uu = {.ll = u};
const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
DWunion w;
if (b == 0)
return u;
if (bm <= 0) {
w.s.low = 0;
w.s.high = (UWtype) uu.s.low << -bm;
} else {
const UWtype carries = (UWtype) uu.s.low >> bm;
w.s.low = (UWtype) uu.s.low << b;
w.s.high = ((UWtype) uu.s.high << b) | carries;
}
return w.ll;
}