Hitachi SH7750 Programming Manual page 323

if (tempn<0) tempn=0-tempn;
if (tempm<0) tempm=0-tempm;
temp1=(unsigned long)tempn;
temp2=(unsigned long)tempm;
RnL=temp1&0x0000FFFF;
RnH=(temp1>>16)&0x0000FFFF;
RmL=temp2&0x0000FFFF;
RmH=(temp2>>16)&0x0000FFFF;
temp0=RmL*RnL;
temp1=RmH*RnL;
temp2=RmL*RnH;
temp3=RmH*RnH;
Res2=0;
Res1=temp1+temp2;
if (Res1<temp1) Res2+=0x00010000;
temp1=(Res1<<16)&0xFFFF0000;
Res0=temp0+temp1;
if (Res0<temp0) Res2++;
Res2=Res2+((Res1>>16)&0x0000FFFF)+temp3;
if(fnLmL<0){
~
Res2= Res2;
if (Res0==0) Res2++;
~
else Res0=(
}
if(S==1){
Res0=MACL+Res0;
if (MACL>Res0) Res2++;
if (MACH&0x00008000);
else Res2+=MACH|0xFFFF0000;
Res0)+1;
Rev. 2.0, 03/99, page 309 of 396