OpenEuphoria

Re: What is math:intdiv doing?

• Posted by Lnettnay Mar 30, 2015
• 1804 views

public function intdiv(object a, object b)	 
	return sign(a)*ceil(abs(a)/abs(b)) 
end function 

include std/math.e 
 
? intdiv(10,1)  --> 10 
? intdiv(10,2)  --> 5 
? intdiv(10,3)  --> 4  //  3*4 = 12 
? intdiv(10,4)  --> 3  //  4*3 = 12  
? intdiv(10,5)  --> 2 

Hi _tom,

From the docs it appears that the purpose of intdiv is to give the minimum number of containers that will be needed for a certain number of items. If I have 10 items and can only fit 3 or 4 per container then I will need 4 containers.

8.24.2.5 intdiv

include std/math.e 
namespace math 
public function intdiv(object a, object b) 
-- might have been more clear if the signature was 
-- public function intdiv(object dividend, object divisor) 

Return an integral division of two objects. 
Parameters: 
 
    dividend : any Euphoria object. 
    divisor  : any Euphoria object.  
 
Returns: 
 
An object, which will be a sequence if either dividend or divisor is a sequence. 
Comments: 
 
    This calculates how many non-empty sets when dividend is divided by divisor. 
    The result's sign is the same as the dividend's sign.  

object Tokens = 101 
object MaxPerEnvelope = 5 
integer Envelopes = intdiv( Tokens, MaxPerEnvelope) --> 21 

Hope this helps,

Lonny