SH-2A Datasheet, PDF (222/501 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 6 Instruction Descriptions
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=(~Res0)+1;
}
if(S==1){
Res0=MACL+Res0;
if (MACL>Res0) Res2++;
Rev. 3.00 Jul 08, 2005 page 208 of 484
REJ09B0051-0300