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LISP: atof does not return the complete number of the input string

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by

Autodesk Alumni
in

By Gopinath Taget

Consider this: You are trying to convert a string in lisp to a real number using atof and the number appears truncated. Is there a way to get the complete number:

Command: (atof "1234.34456")
1234.34

The number is not rounded off internally. The number displayed on the command line is however. You can use the rtos function to get the complete number when all the digits need to be seen by the user.

Command: (setq test (atof "0.4732223983"))
0.473222

Command: (rtos test 2 10)
"0.4732223983"

Comments

2 responses to “LISP: atof does not return the complete number of the input string”

  1. maycol Avatar
    maycol

    Hi, I have the trouble too. I need convert the string complete in number.
    Example (atof “123456789.344”) —> 123456789.34, but atof not is command good for this. the result is
    (atof “123456789.344”) —>1.23457e+008 (I not need this).
    I need the next.
    (xxxx “123456789.344”) —> 123456789.344, I dont know that is xxxx for convert to number complete 1234.34456

    Reply
  2. maycol Avatar
    maycol

    I need the next.
    (xxxx “123456789.344”) —> 123456789.344, I dont know that is xxxx for convert to number complete 123456789.344

    Reply

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