能运算的函数： sin,cos,tg,ctg,e^,pow(x,y),cosh,sinh,tgh,log10,ln,sqrt,arcsin,arccos,
运算方式： +,-,*,/,绝对值（“[ ]”）,^,!,
输入规则： 用键盘或按钮都可，输入完按回车运算，(光标要在最后)
sin(21-32)/(12-43)
4(323-4343) 4*(323-4343) e^2-sin3-3^4,(不要输入pow(3,4)) //有无*都可
2*3^4是（2*3）^4 而不是2*(3^4) 也就是要用x^y就要一定要（x^y）加上一个括号
[3-4]是求3-4的绝对值不是中括号
标签：
arcsin
arccos
cosh
sinh
上传时间：
2015-04-11
上传用户：sxdtlqqjl
cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used to calculate a whole range of scientific functions including sin, cos, tan, arctan, arcsin, arccos, sinh, cosh, tanh, arctanh, log, exp, square root and even multiply and divide.
the method dates back to volder [1959], and due to its versatility and compactness, it made possible the microcoding of the hp35 pocket scientific calculator in 1972.
here is some code to illustrate the techniques. ive split the methods into three parts linear, circular and hyperbolic. in the hp35 microcode these would be unified into one function (for space reasons). because the linear mode can perform multiply and divide, you only need add/subtract and shift to complete the implementation.
you can select in the code whether to do the multiples and divides also by cordic means. other multiplies and divides are all powers of 2 (these dont count). to eliminate these too, would involve ieee hackery.
标签：
essentially
algorithm
describe
suitably
上传时间：
2017-03-02
上传用户：litianchu
