参数派生的二进制二进制8pp ieee754-2019符号描述值7 6 5 4 3 2 1 16 32 64 k存储(位)k 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 16 32 64 P Precision(bits)显着(位)P -1 6 5 4 3 2 1 0 10 23 52 Se全特异性指数SE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 W - 1-1-1-1-1-1 0 1 3 7 15 31 63 15 127 1023 EMIN EMIN EMIN EMIN EMIN最小指数SE -EMAX 0-1-1 -1 -1 -1 -1 -1 -7 -15 -15 -15 -15 -31-15 -15 -142 -BIAS BIAN 4 -EM EMENT BIAN -EMENT BIAN BIAN BIAN 8 16 32 63 15 127 1023