make NAN handling depend on dummy2 parameter

Author: martin-frbg

kernel/riscv64/scal_vector.c

@@ -71,7 +71,7 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da, FLOAT *x, BLAS
         FLOAT_V_T v0, v1;
         unsigned int gvl = 0;
         if(inc_x == 1){
-                if (0){ //if(da == 0.0){
+                if(dummy2 == 0 && da == 0.0){
                         memset(&x[0], 0, n * sizeof(FLOAT));
                 }else{
                         gvl = VSETVL(n);
@@ -96,7 +96,7 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da, FLOAT *x, BLAS
                         }
                 }
         }else{
-                if (0) { //if(da == 0.0){
+                if(dummy2 == 0 && da == 0.0){
                         BLASLONG stride_x = inc_x * sizeof(FLOAT);
                         BLASLONG ix = 0;
                         gvl = VSETVL(n);