delphi7高精度计算单元 high.dcu

基于ansistring类型开发了delphi7的高精度计算单元high.dcu，其中包含高精度加法、减法、乘法、除法、最小公倍数、最大公约数 等计算函数或过程。其接口文件如下： unit high; interface const intmax=32767; function d2c(d:byte):char; function c2d(c:char):byte; function len(s:ansistring):integer; function plus(x,y:ansistring):ansistring; function mult(x,y:ansistring):ansistring; function minus(x,y:ansistring):ansistring; function divide(var x:ansistring;y:ansistring):ansistring; function gcd(x,y:ansistring):ansistring; function lcm(x,y:ansistring):ansistring; function hex2dec(s:ansistring):ansistring; procedure trans(a:ansistring;b:integer); implementation ................ end.