nzl1116 发表于 2010-1-20 08:25:00

AutoLISP 本身也能定义随机函数

思路：利用当前时间的读秒数

nzl1116 发表于 2010-1-20 08:31:00

(defun random (delta int / int0 int1 second n item k)
(if (not (numberp delta))
    (progn
      (princ "\n参数类型错误！")
      (quit)
    )
)
(if (/= (fix int) int)
    (progn
      (princ "\n参数类型错误！")
      (quit)
    )
)
(if (or (> int 60000) (< int 2))
    (progn
      (princ "参数值太大或太小。")
      (quit)
    )
)
(setq int0 (fix (/ 60000 int))
int0 (* int0 int)
int0 (1- int0)
)
(setq second (read (menucmd "M=$(edtime,$(getvar,date),ss.MSEC)"))
int1   (* second 1000)
n      1
)
(while (and (< n 10) (< int0 int1))
    (setq second (read (menucmd "M=$(edtime,$(getvar,date),ss.MSEC)"))
   int1(* second 1000)
   n(1+ n)
    )
)
(if (= n 10)
    (setq int1 0)
)
(setq item (rem int1 int)
k    (/ delta (1- int))
)
(* item k)
)

zml84 发表于 2011-1-2 08:43:09

本帖最后由 zml84 于 2011-1-2 08:48 编辑

;;;===========================================;;;功能：生成区间的随机数

(defun ZL-RAND ()
    (/ (rem (getvar "CPUTICKS") 1984) 1983)
)


;;;===========================================
;;功能：生成指定区间内的随机数

(defun ZL-RAND2      (A B)
    (+ (* (ZL-RAND) (- A B))
       B    )
)

zark 发表于 2011-4-26 07:57:07

回复 nzl1116 的帖子

不会吧，要这么累

zark 发表于 2011-4-26 08:01:47

回复 zml84 的帖子

为什么不等于1
(repeat 1000000
(_>   (cond
((_>   ((= (zl-rand) 1) (princ "1"))
((_>   ((= (zl-rand) 0) (princ "0"))
((_>   (T NIL)
((_>   )
(_>   (PRINC)
(_>   )
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000000000000
000000000

zml84 发表于 2011-4-26 12:46:37

测试结果：
10000011011101110110011111000110011110101001010111000110001000001001010010110100
11101110000101000001110110100011001010011000110101110000011101000111100110000100
00010100000101110010011010100101110101011000010100100100110111011001011011011111
10100100010101100001110100110001111100111011110000101101111010111001011010011111
11111110100110001111001011010001011110001010000111001111101100010001001110110100
00101110110011001001111011000001111101001100110000011101110001011000010001100101
00111110101001010100001100111100100000111000111001000100010100110010110000001110
01010111101000100110011000011011000101101110000010100001100010100010100101111111
00100111100110001110010110001110011011011011101100010110011100000010101010010000
10110101100000100001110010010010000111000000111110100111100011011101101110100000
11110111111111000010011001001001011110011010010010001101000010010001111000000011
10110010001001010101111001111011011101011110101101010011000111110010110100000111
11110100101011011000110001111110010001011101100100111001000100010100101100010001
11110111001000011010101111010110011000010001110110101010100101000111100011110010
10000110100101010010010110010111110000010001000101111110101011100110000000010111
00101101110101000011000001000110001111100001100100101000000110111101000110011011
01110011001000110110010111010110101010000010000001100110010001110001101110110000
01111111011101001000111010011110010000110101001110111111100110101101110110111000
10001100000001110010010001010001001011010111011000101111001011111101101110001101
00101101101010011111000111011110000100101010001000010110000100111000011010110000
00101101010001011100110000000110011111110101110000101101101010011101010011100000
10110001010010001101100100100000011100111101110101101011001100010000011010000000
01011000111111011000111111100111100110110011001010001000000101010111100100101010
00011001110100001111010110000110000100100010000110100111000010111011000101001001
10101100000001010101111111000010110100100110000100111111101011010111010010110101
110000000111011001110
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