Thread: error: invalid operands to binary *

How the heck am I getting this error?

error: invalid operands to binary *

Code:

*(yuv->y + i) = (0.257) * (image->data + (i*3)) + 
						(0.504) * (image->data + (i*3+1)) + 
						(0.098) * (image->data + (i*3+2)) + 16;
						
		*(yuv->u + i) = (0.439) * (image->data + (i*3)) + 
						(0.368) * (image->data + (i*3+1)) - 
						(0.071) * (image->data + (i*3+2)) + 128;
						
		*(yuv->v + i) =(-0.148) * (image->data + (i*3)) - 
						(0.291) * (image->data + (i*3+1)) + 
						(0.439) * (image->data + (i*3+2)) + 128;