apply change discussed on the list : * new default precision "-1" means use the current stream precision * otherwise, save and restore the stream precision
apply change discussed on the list :
* new default precision "-1" means use the current stream precision
* otherwise, save and restore the stream precision

TSC21/Eigen,Zefz/eigen,pasuka/eigen,Zefz/eigen,Zefz/eigen,Zefz/eigen,ROCmSoftwarePlatform/hipeigen,TSC21/Eigen,ritsu1228/eigen,toastedcrumpets/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,pasuka/eigen,TSC21/Eigen,pasuka/eigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,toastedcrumpets/eigen,ritsu1228/eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,ritsu1228/eigen