|
|
Posted by Bonge Boo! on 06/12/67 11:41
On 3/3/06 16:20, in article 51_Nf.29511$wl.1331@text.news.blueyonder.co.uk,
"d" <d@example.com> wrote:
>> This is driving me slightly nuts. I want to do some very simple
>> arithmetic,
>> but always make sure I return a positive number, even if the result of the
>> calculation is a negative.
>>
>> Basically convert -4 to 4, etc.
>>
>> So I've been trawling the manual for functions and Googling, and can't
>> find
>> a thing. Lots of stuff about formatting string with sprintf, and stuff
>> about
>> converting float to ints, but nothing as obvious as this.
>>
>> Suggestions gratefully received.
>
> Even if the abs() function didn't exist, which it does, this is a very
> simple problem to solve:
One day I will understand the naming convention of function in the manual. I
spnd hours lookingfor the wrong soet ofthing..
> function new_abs($s) {
> if ($s<0) $s*=-1;
> return $s;
> }
Obvious. Multiply -ve with -ve to get +ve. God my maths is rusty
And thanks.
Navigation:
[Reply to this message]
|