====== Applying a set of attributes and union operation ======

===== Set Attributes  =====
{{http://hyperfun.org/HF2/Language/Library/Attri_Lib/images/hfA_SetAttributes.JPG?200x200&nolink}}\\
**Definition**: if(fв%_0) then s=c

**Call**: hfA_SetAttributes(f,s,c);

**Parameters**: \\
f - real values \\ 
s - Output Array \\
c - array of attributes 

**Output** : array s

**Test file**: [[http://hyperfun.org/HF2/Language/Library/Attri_Lib/hffiles/hfA_SetAttributes.hf|hfA_SetAttributes.hf]]

===== Set Colors =====
{{http://hyperfun.org/HF2/Language/Library/Attri_Lib/images/hfA_SetColor.JPG?200x200&nolink}}\\

**Definition**: if(fв%_0) then s[1]=r;s[2]=g;s[3]=b;

**Call**: hfA_SetColor(f,s,r,g,b);

**Parameters**: \\
f - real values \\
s - Output Array \\
r,g,b - rgb color values \\

**Output** : s array

**Test file**: [[http://hyperfun.org/HF2/Language/Library/Attri_Lib/hffiles/hfA_SetColor.hf|hfA_SetColor.hf]]

===== Union =====
{{http://hyperfun.org/HF2/Language/Library/Attri_Lib/images/hfA_union.JPG?200x200&nolink}}\\

**Definition** : R_uni(f1,f2)

**Call**: hfA_Union(f1,f2,s,c1,c2,type);

**Parameters**: \\
f1,f2 - function values \\
s - Output Array \\
c1 - array of attributes of f1 \\
c2 - array of attributes of f2 \\
type - Predefined Unions (for the intersection set) :
  * 0 : Attributes of f1 
  * 1 : Attributes of f2
  * 2 : Sum of c1 and c2
  * 3: Min of the components s [i] = min(c1[i],c2[i]);
  * 4: Max of the components s[i] = max(c1[i],c2[i]);

**Output** : Return the value R_uni(f1,f2). Fill the s array

**Test file**: [[http://hyperfun.org/HF2/Language/Library/Attri_Lib/hffiles/hfA_Union.hf|hfA_Union.hf]]