<HTML> <HEAD> <TITLE>subn</TITLE></HEAD> <BODY> <h1>subn</h1> <B>Category</B><p> <a href="math_commands.html">Mathematical commands</a><p> <B>Syntax</B><p> <p> subn(vA,B);<p> vA -= B;<p> vA = vA - B;<p> <B>Description</B><p> <p> B is subtracted from vA. Since a var can only be from 0-255, if the result is less than 0, then the value wraps around, e.g. 10 - 12 would give 254.<p> <B>See also</B><p> <a href="subv.html">subv</a><p> </BODY></HTML>