205     if (DFISNAN(dfl) || DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decDivide()
1081   if (DFISNAN(df)) return decNaNs(result, df, NULL, set);  in decFloatAbs()
1692   if (DFISNAN(dfl) || DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatCompare()
1716   if (DFISNAN(dfl) || DFISNAN(dfr)) {  in decFloatCompareSignal()
1744   if (DFISNAN(dfl) || DFISNAN(dfr)) {  in decFloatCompareTotal()
1912   if (!DFISNAN(df) && DECCOMBMSD[sourhi>>26]) return DECPMAX;  in decFloatDigits()
2034     if (DFISNAN(dfl) || DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatFMA()
2035     if (DFISNAN(dff)) return decNaNs(result, dff, NULL, set);  in decFloatFMA()
2429   return DFISNAN(df);  in decFloatIsNaN()
2479   if (DFISNAN(df)) return decNaNs(result, df, NULL, set);  in decFloatLogB()
2524   if (DFISNAN(dfl)) {  in decFloatMax()
2526     if (DFISNAN(dfr) || DFISSNAN(dfl)) return decNaNs(result, dfl, dfr, set);  in decFloatMax()
2529   if (DFISNAN(dfr)) {  in decFloatMax()
2558   if (DFISNAN(dfl) || DFISNAN(dfr)) return decFloatMax(result, dfl, dfr, set);  in decFloatMaxMag()
2583   if (DFISNAN(dfl)) {  in decFloatMin()
2585     if (DFISNAN(dfr) || DFISSNAN(dfl)) return decNaNs(result, dfl, dfr, set);  in decFloatMin()
2588   if (DFISNAN(dfr)) {  in decFloatMin()
2617   if (DFISNAN(dfl) || DFISNAN(dfr)) return decFloatMin(result, dfl, dfr, set);  in decFloatMinMag()
2643   if (DFISNAN(df)) return decNaNs(result, df, NULL, set);  in decFloatMinus()
2668     if (DFISNAN(dfl) || DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatMultiply()
2792   if (DFISNAN(dfl) || DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatNextToward()
2882   if (DFISNAN(df)) return decNaNs(result, df, NULL, set);  in decFloatPlus()
2928     if (DFISNAN(dfl) || DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatQuantize()
3195   if (DFISNAN(df)) return decNaNs(result, df, NULL, set);   /* sNaN */  in decFloatReduce()
3278   if (DFISNAN(dfl)||DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatRotate()
3331     if (DFISNAN(dfl) && DFISNAN(dfr)) return 1;  in decFloatSameQuantum()
3360   if (DFISNAN(dfl)||DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatScaleB()
3408   if (DFISNAN(dfl)||DFISNAN(dfr)) return decNaNs(result, dfl, dfr, set);  in decFloatShift()
3463   if (DFISNAN(dfr)) return decFloatAdd(result, dfl, dfr, set);  in decFloatSubtract()
3608   if (!DFISNAN(dfl)) dfl=dfr;		/* RHS must be NaN, use it */  in decNaNs()
3890     if (DFISNAN(df)) return decNaNs(result, df, NULL, set);