数学表达式解析器在Delphi中？ [英] mathematical expression parser in Delphi?

问题描述

用于评估数学表达式的最佳算法？

是否有内置的Delphi函数会将诸如'2 * x + power（x，2）'或任何等式的字符串转换为float？

Is there a built-in Delphi function which would convert a string such as '2*x+power(x,2)' or any equation to float? StrToFloat raises an exception because of the char X and power.

谢谢。

推荐答案

免费的 JCL 包括TEvaluator，由当前的Delphi编译工程师之一编写的解析器。它可能比基于Windows Script Host的表达式求值程序要高得多。

The free JCL includes TEvaluator, a parser written by one of the current Delphi compiler engineers. It will likely be far more efficient than an expression evaluator based on Windows Script Host.

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