double word length arithmetic 双字长运算

fixed-point double word-length arithmetic 定点双字长运算

fixed-point double-word length arithmentic [计] 定点双字长运算

double word length operation [计] 双字长运算

double length word 倍长字

double-word-length fixed-point arithmetic 双倍字长定点算术运算

double-length word 双倍长字

double e length word 倍长字