[討論] 哪一種寫法對cpu比較好?
As title,
假設一種狀況
10個號碼 integer int_temp(10)
範圍 001~100
分成10行 logical log_temp(10)
001 002 003 004 005 006 007 008 009 010
011 ... ... ... ... ... ... ... ... 020
021 ... ... ... ... ... ... ... ... 030
... ...
... ...
...
091 ... ... ... ... ... ... ... ... 100
第一種就是土法鍊工法
if(x(1).eq.1.or.x(1).eq.11.or. ... ... x(1).eq.91)log_temp(1)=.ture.
if(x(1).eq.2.or.x(1).eq.12.or. ... ... x(1).eq.92)log_temp(2)=.ture.
...
...
...
if(x(1).eq.10.or.x(1).eq.20.or. ... ... x(1).eq.100)log_temp(10)=.ture.
... x(2)
... x(3)
...
...
... x(10)
第二種就是利用do下去改寫
讓撰寫者經過思考把攏長的判斷式放入do迴路內
試問,
這兩種方法
哪一種對於cpu會比較好?
換句話來說
哪一種比較不消耗cpu資源?
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