--- zzzz-none-000/linux-3.10.107/arch/mips/math-emu/ieee754int.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/mips/math-emu/ieee754int.h	2021-11-10 11:53:54.000000000 +0000
@@ -83,10 +83,17 @@
     if(ve == SP_EMAX+1+SP_EBIAS){\
 	if(vm == 0)\
 	  vc = IEEE754_CLASS_INF;\
-	else if(vm & SP_MBIT(SP_MBITS-1)) \
-	  vc = IEEE754_CLASS_SNAN;\
-	else \
-	  vc = IEEE754_CLASS_QNAN;\
+	else if (ieee754_csr.nan2008) { \
+	  if(vm & SP_MBIT(SP_MBITS-1)) \
+	    vc = IEEE754_CLASS_QNAN;\
+	  else \
+	    vc = IEEE754_CLASS_SNAN;\
+	} else { \
+	  if(vm & SP_MBIT(SP_MBITS-1)) \
+	    vc = IEEE754_CLASS_SNAN;\
+	  else \
+	    vc = IEEE754_CLASS_QNAN;\
+	} \
     } else if(ve == SP_EMIN-1+SP_EBIAS) {\
 	if(vm) {\
 	    ve = SP_EMIN;\
@@ -117,10 +124,17 @@
     if(ve == DP_EMAX+1+DP_EBIAS){\
 	if(vm == 0)\
 	  vc = IEEE754_CLASS_INF;\
-	else if(vm & DP_MBIT(DP_MBITS-1)) \
-	  vc = IEEE754_CLASS_SNAN;\
-	else \
-	  vc = IEEE754_CLASS_QNAN;\
+	else if (ieee754_csr.nan2008) { \
+	  if(vm & DP_MBIT(DP_MBITS-1)) \
+	    vc = IEEE754_CLASS_QNAN;\
+	  else \
+	    vc = IEEE754_CLASS_SNAN;\
+	} else { \
+	  if(vm & DP_MBIT(DP_MBITS-1)) \
+	    vc = IEEE754_CLASS_SNAN;\
+	  else \
+	    vc = IEEE754_CLASS_QNAN;\
+	} \
     } else if(ve == DP_EMIN-1+DP_EBIAS) {\
 	if(vm) {\
 	    ve = DP_EMIN;\