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From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: IEEE-754 Float to int
Date: Tue, 22 Nov 2016 17:39:59 +0100	[thread overview]
Message-ID: <20161122163959.GB2919@kroah.com> (raw)
In-Reply-To: <CAJX_Q+3V-8v+=cWOYP_oRqdj40s4fDRPB-sgQcAKn7yZJPYnZQ@mail.gmail.com>

On Tue, Nov 22, 2016 at 04:05:18PM +0000, Lucas Tanure wrote:
> Hi,?
> 
> At some point my hardware gives me a 32bit?IEEE-754 float, like this :
> 
> 
> regmap_read(device->regmap, ADDR0, &temp);
> 
> value = temp << 16;
> 
> regmap_read(device->regmap,?ADDR1, &temp);
> 
> value |= temp;
> 
> 
> So, value has a 32bit float now, and I would like to print just the integer
> part, like :
> Read 26.92387 --> Print 26.?
> Simple, no float operations.?
> 
> How I can do it ?

Just print the upper 16 bits shifted right by 16 bits.

But why would you want to print the value anyway?  Who would use it?

thanks,

greg k-h

  parent reply	other threads:[~2016-11-22 16:39 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-22 16:05 IEEE-754 Float to int Lucas Tanure
2016-11-22 16:19 ` Anupam Kapoor
2016-11-22 16:21   ` Lucas Tanure
2016-11-22 16:28     ` Anupam Kapoor
2016-11-22 16:30       ` Lucas Tanure
2016-11-22 16:39 ` Greg KH [this message]
2016-11-22 16:44   ` Lucas Tanure
2016-11-22 16:55     ` Greg KH
2016-11-23 12:30       ` Lucas Tanure
2016-11-23 14:04         ` Anupam Kapoor
     [not found] <CAJX_Q+1iPpLnbLYB6=9gWR2EEwek5VvioBCZB6gYsChOZ3EyVA@mail.gmail.com>
2016-11-22 17:10 ` Lucas Tanure
2016-11-22 20:33   ` Guenter Roeck

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