linux-kernel - Re: Floating Point Issue

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Message-ID: <Pine.LNX.4.64.0709272300250.25099@fbirervta.pbzchgretzou.qr>
Date:	Thu, 27 Sep 2007 23:01:23 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	"linux-os (Dick Johnson)" <linux-os@...logic.com>
cc:	mahamuni ashish <ash_lkp@...oo.co.in>,
	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: Floating Point Issue


On Sep 27 2007 16:53, linux-os (Dick Johnson) wrote:
>
>If Windows lets you get away with this, then Windows is broken.
>memset(ch,'\0',strlen(ch) );

No, probably just the chance that the memory to which ch points
had a nul in it or in the near bytes.

Use valgrind, move along.

>On Thu, 27 Sep 2007, mahamuni ashish wrote:
>
>> I have small code....
>>
>> #include <stdio.h>
>> #include <string.h>
>>
>> int main()
>> {
>> float f= 1256.35;
>> char ch[4];
>>
>> printf("\n1. f : %f",f);
>> memset(ch,'\0',strlen(ch) );
>> printf("\n2. f : %f",f);
>> return 0;
>> }
>>
>> Expected output is
>> 1. f : 1256.35
>> 2. f : 1256.35
>>
>> But I am getting the output
>> (on windows)
>> 1. f : 1256.35
>> 2. f : 0.000000
>>
>> (on Linux)
>> 1. f : 1256.35
>> segmentation fault
>>
>> why?
>>
>>
>>      Forgot the famous last words? Access your message archive online at http://in.messenger.yahoo.com/webmessengerpromo.php
>>
>> -
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>
>Cheers,
>Dick Johnson
>Penguin : Linux version 2.6.22.1 on an i686 machine (5588.29 BogoMips).
>My book : http://www.AbominableFirebug.com/
>_
>
>
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>-
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