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本人从网上找的绝对好用的cad中数字求和的lisp小程序

使用方法：把以下程序复制，打开cad 在cad中保存为add.lisp文件，把add.lisp程序复制到cad安装程序文件夹中的support文件中；打开cad选加载应用程序，找到add.lisp程序选加载，点启动，选add.lisp即可。命令行输入add回车，选择数字，回车，ok！乘法输mul命令，绝对好用。具体方法如图：

(SETVAR "TEXTSIZE" 3.0)

;add.lsp

;本程序用处是 进行加法运算(addition)

;用法:

;   装载后 键入 add , 选择所要计算的数据,

;   然后 回车 即可在command之下输出结果.

;

(DEFUN C:ADD()

(princ "\nAddition,Version3.0,(C)1997-2000 by Huang Zenghong. Email: zhhuang@public.cc.jl.cn")

;保存原系统变量和出错处理函数

(setq oldech (getvar "CMDECHO")

olderr *ERROR*)

(setvar "CMDECHO" 0)

;定义新的出错处理函数

(defun *ERROR* (msg)

(princ "\n") (princ msg)

(setvar "CMDECHO" oldech)

(setq *ERROR* olderr)

)

(SETQ

ADDIT NIL SS NIL EN NIL ED NIL AS NIL

A_TXT NIL NEW_TXT NIL POT NIL

)

(SETQ A_TXT 0)

(PROMPT "\n选择您要进行加法运算的数据 : ")

(SETQ SS (SSGET))

(WHILE (> (SSLENGTH SS) 0)

(SETQ EN (SSNAME SS 0))

(SETQ ED (ENTGET EN))

(SETQ AS (CDR (ASSOC '0 ED)))

(IF (= AS "TEXT") (_TXT))

(IF (= AS "MTEXT") (_TXT))

(SSDEL EN SS)

)

(SETQ

ADDIT NIL SS NIL EN NIL ED NIL AS NIL

A_TXT NIL NEW_TXT NIL POT NIL

)

(PROMPT (STRCAT "\n加法运算之和: " NEW_TEXT))

(PRINC)

(SETQ POT (GETPOINT "\n请问您要将计算结果放在何处?:"))

(IF (NOT (= POT NIL))

(TEXT_YES)

)

;恢复原系统变量和出错处理函数

(setvar "CMDECHO" oldech)

(setq *ERROR* olderr)

(princ)

)

;加法

(DEFUN _TXT ()

(SETQ A_TXT (+ (ATOF (CDR (ASSOC '1 ED))) A_TXT))

(SETQ NEW_TEXT (RTOS A_TXT 2 3))

(SSDEL EN SS)

)

;mul.lsp

;本程序用处是 进行乘法运算(multiplication)

;用法:

;   装载后 键入 mul , 选择所要计算的数据,

;   然后 回车 即可在command之下输出结果.

;

(DEFUN C:mul()

(princ "\nMultiplication,Version3.0,(C)1997-2000 by Huang Zenghong. Email: zhhuang@public.cc.jl.cn")

;保存原系统变量和出错处理函数

(setq oldech (getvar "CMDECHO")

olderr *ERROR*)

(setvar "CMDECHO" 0)

;定义新的出错处理函数

(defun *ERROR* (msg)

(princ "\n") (princ msg)

(setvar "CMDECHO" oldech)

(setq *ERROR* olderr)

)

(SETQ

ADDIT NIL SS NIL EN NIL ED NIL AS NIL

B_TXT NIL NEW_TXT NIL POT NIL

)

(SETQ B_TXT 1.0)

(PROMPT "\n选择您要进行乘法运算的数据: ")

(SETQ SS (SSGET))

(WHILE (> (SSLENGTH SS) 0)

(SETQ EN (SSNAME SS 0))

(SETQ ED (ENTGET EN))

(SETQ AS (CDR (ASSOC '0 ED)))

(IF (= AS "TEXT") (_TXTM))

(IF (= AS "MTEXT") (_TXTM))

(SSDEL EN SS)

)

(SETQ

ADDIT NIL SS NIL EN NIL ED NIL AS NIL

B_TXT NIL NEW_TXT NIL POT NIL

)

(PROMPT (STRCAT "\n乘法运算之积: " NEW_TEXT))

(PRINC)

(SETQ POT (GETPOINT "\n请问您要将计算结果放在何处?:"))

(IF (NOT (= POT NIL))

(TEXT_YES)

)

;恢复原系统变量和出错处理函数

(setvar "CMDECHO" oldech)

(setq *ERROR* olderr)

(princ)

)

;乘法

(DEFUN _TXTM ()

(SETQ B_TXT (* (ATOF (CDR (ASSOC '1 ED))) B_TXT))

(SETQ NEW_TEXT (RTOS B_TXT 2 3))

(SSDEL EN SS)

)

;去除空格

(DEFUN KOC()

(SETQ C3 NEW_TEXT)

(SETQ PT1 (STRLEN C3))

(SETQ PT2 (SUBSTR C3 PT1 1))

(WHILE (= "0" PT2)

(SETQ PT1 (- PT1 1))

(SETQ PT2 (SUBSTR C3 PT1 1))

)

(WHILE (= "." PT2)

(SETQ PT1 (- PT1 1))

(SETQ PT2 (SUBSTR C3 PT1 1))

)

(SETQ KC (SUBSTR C3 1 PT1))

(SETQ C3 KC)

)

;写数据

(DEFUN TEXT_YES()

(KOC)

(COMMAND "TEXT" POT "" 0  C3)

)