pv1              4258 src/decNumber/decNumber.c           const Unit *pv1, *pv2;
pv1              4261 src/decNumber/decNumber.c           for (pv1=msu1; ; pv1--, pv2--) {
pv1              4265 src/decNumber/decNumber.c             if (*pv1!=v2) break;             // no longer the same
pv1              4266 src/decNumber/decNumber.c             if (pv1==var1) break;            // done; leave pv1 as is
pv1              4269 src/decNumber/decNumber.c           if (*pv1<v2) break;                // var1 too low to subtract
pv1              4270 src/decNumber/decNumber.c           if (*pv1==v2) {                    // var1 == var2