"Demevec" <lik### [at] msncom> wrote in news:3d528d2c@news.povray.org

> I used only a simple statement such as: "#declare Value1=sgn(-3);".

looks like bug IMHO
 
> Could someone help me verify if this is a bug or maybe a workaround if
> it is or etc.

#macro Mysgn(a)
  #local r=0;
  #if (a) #local r=a/abs(a); #end
  r
#end

#declare a=Mysgn(-3);
#declare b=Mysgn(+3);
#declare c=Mysgn(0);

#debug concat( str(a,3,9),"  ",str(b,3,9),"  ",str(c,3,9),"\n")


-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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