problem with floats

Pondering the philosophy behind the language
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0x69
Posts: 4
Joined: Sun Jul 25, 2010 9:27 am

problem with floats

Post by 0x69 »

Hi,

When I try to execute

Code: Select all

(+ 1.1 1.2)
I get error:
ERR: value expected in function + : .1
NewLisp version is v.10.7.1 64-bit on Linux (Ubuntu 18.04.1 LTS) IPv4/6 UTF-8 libffi

What's the problem here with floats and how to fix it ?

HPW
Posts: 1377
Joined: Thu Sep 26, 2002 9:15 am
Location: Germany
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Re: problem with floats

Post by HPW »

Hello,

Take a look at your locale with (set-locale).

This sets the locale to german with , as decimal seperator:
(set-locale "de_DE")

And note that + is for integer-math. Use (add ... ...) for floats.

And the doc has good explanations for that. ;-)

Regards
Hans-Peter

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