sincos
      Arguments:
      
        - _w(512), _h(512), _new(0)
Description:
Generation of a simple sine cosine testimage
Default values:
w=h=512, new=1
      Examples of use:
      • Example #1
      $ gmic sincos , +shift. 50%,0,0,0,2 +shift.. 0,50%,0,0,2 a c
      
Command: sincos , +shift. 50%,0,0,0,2 +shift.. 0,50%,0,0,2 a c
      • Example #2
      $ gmic sincos , sincos ,,1 +- f. 'if(i<-1,0,i)'
                
Command: sincos , sincos ,,1 +- f. 'if(i<-1,0,i)'
        
Command: sincos , sincos ,,1 +- f. 'if(i<-1,0,i)'
        
Command: sincos , sincos ,,1 +- f. 'if(i<-1,0,i)'