RE: Cube root

[Buck Calabro <buck.calabro@xxxxxxxxxxxxxxxxx>]

Have you looked at the C pow() function?  Keeping in mind the inherent
accuracy problems of floating point, here's a sample:

h/copy qrpglesrc,stdhspec                                
h bnddir('QC2LE')                                        
 * dbgview(*list)                                        
                                                         
 * Calculate power & root                                
                                                         
d get_errno       pr              *   extproc('__errno') 
                                                         
dpow              pr             8f   extproc('pow')     
d x                              8f   value              
d y                              8f   value              
                                                         
d x               s              8f                      
d y               s              8f                      
d z               s              8f                      
                                                         
c                   eval      x=8                        
c                   eval      y=1/3                      
c                   eval      z=pow(x: y)                
c     z             dsply                                
c                   eval      *inlr = *on   

Buck 

> -----Original Message-----
> From: Walter Hesius 
> Sent: Wednesday, February 14, 2001 4:06 PM
> To:   RPG400-L@midrange.com
> Subject:      Cube root
> 
> Hi all,
>  
> I would like to know a way to calculate the cube root of a number. We are
> on V4R4.
>  
> Thanx.
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