复数表达式计算器zi

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复数表达式计算器，是实数表达式计算器的升级版, 所有函数都延扩到复域计算. 兼容实数域, 对ceil,floor, int,等做了复数域上的延扩.cmd命令行下输入.
> zi.exe  sin(5+7i)*cos(6-3i)+sin(5+7i)*i
/***
  = -28817/6 + 4899/2(i)   //渐进分数表示
  = -4802.848508148568 + 2449.503431876684(i)   //浮点表示
  =  5391.421042267110 * exp[(i)2.669968709666] //极坐标表示
***/
支持实数同名的复变函数:
  +, -, *, /, , ^, pi=3.1415926536, e=2.71828182846
  rand, round, int, ceil, floor, sqrt, lg, ln, exp, abs, arg
  torad, sin, cos, tan, arcsin, arccos, arctan
  sinh, cosh, tanh, arcsinh, arccosh, arctanh

1. usage:  zi [expression]example:  zi "sin(5+7i)*cos(6-3i)+sin(5+7i)*i"  = -28841/6 + 4901/2(i)mathematical function:  +, -, *, /, , ^, pi=3.1415926536, e=2.71828182846  rand, round, int, ceil, floor, sqrt, lg, ln, exp, abs, arg  torad, sin, cos, tan, arcsin, arccos, arctan  sinh, cosh, tanh, arcsinh, arccosh, arctanhversion:  1.0.05

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