Dear experts! I would like to ask, how to calculate the square root in assembly language? It is best to provide the source code! Thanks!
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中国DOS联盟论坛 » DOS开发编程 & 发展交流 （开发室） » How to calculate the square root in assembly language? (Seeking help)
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Original Poster
Posted 2006-09-14 21:35 · 中国 江苏 苏州 电信
Floor 2
Posted 2006-09-15 04:18 · 中国 湖南 长沙 电信
Is it an integer or a floating-point number?
What kind of assembly? Is it x86? Does it have a floating-point coprocessor?
If it has an x87 floating-point coprocessor (CPUs after 486DX integrate a floating-point coprocessor), you can use the floating-point instruction FSQRT.
If there is no floating-point coprocessor, you can only write your own program to calculate the square root using the Newton iteration method.
When the value is not large, array look-up is a very good choice.
What kind of assembly? Is it x86? Does it have a floating-point coprocessor?
If it has an x87 floating-point coprocessor (CPUs after 486DX integrate a floating-point coprocessor), you can use the floating-point instruction FSQRT.
If there is no floating-point coprocessor, you can only write your own program to calculate the square root using the Newton iteration method.
When the value is not large, array look-up is a very good choice.
人类存在的目的就是试图理解人类为何存在
Floor 3
Posted 2006-09-16 12:05 · 中国 江苏 苏州 电信
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