这个程序的作用是计算并输出运算表达式的值。本程序支持+、-、*、/、^这五个运算操作符，并支持()以及sin()、cos()、tan()、log()、ln()等函数，支持()、函数的多层嵌套。 本程序有一定的容错及判错功能-A program that evaluates an numeric expression, supports five operators: +, -, *, /, ^, and (), also supports functions like sin, cos, tan

关于cordic算法的C MODEL实现，包括几种不同的模式，如求模值、求相角，求COS,SIN函数等。程序还包括TESTBENCH测试程序。-About cordic algorithm C MODEL implementation, including several different modes, such as modulus values, seeking phase angle, seeking COS, SIN function and so on. TESTBENCH test

this a simple graph of sin , cos , tan with set text color function that developed in visual studio.-this is a simple graph of sin , cos , tan with set text color function that developed in visual studio.