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如何計算開根號的數學運算 http://forum.andestech.com/viewtopic.php?f=23&t=177 |
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Author: | cindy [ Wed Oct 26, 2011 7:06 pm ] |
Post subject: | 如何計算開根號的數學運算 |
Q: 如何計算開根號的數學運算?我發現填常數可以,變數無法計算。 A:常數運算能work是因為compiler直接填結果在程式裡,並沒有帶進真正的function code。 除了程式裡要#include<math.h>之外,必須在linker裡加上-lm, Andesight裡的參數是這樣子加: Attachment: Project上按右鍵-->Settings-->Andes C Linkers-->Libraries,右鍵按下Add… Attachment: p2.gif [ 6.58 KiB | Viewed 8250 times ] 然後打上m,按OK Attachment: p3.gif [ 5.33 KiB | Viewed 8250 times ] 就可以把-lm的參數加上去。 |
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