/** * Implements the CFML Function bitmaskset */ package railo.runtime.functions.math; import railo.runtime.PageContext; import railo.runtime.exp.FunctionException; import railo.runtime.ext.function.Function; public final class BitMaskSet implements Function { public static double call(PageContext pc , double dnumber, double dmask, double dstart, double dlength) throws FunctionException { int number=(int)dnumber, mask=(int)dmask, start=(int)dstart, length=(int)dlength; if(start > 31 || start < 0) throw new FunctionException(pc,"bitMaskSet",2,"start","must be beetween 0 and 31 now "+start); if(length > 31 || length < 0) throw new FunctionException(pc,"bitMaskSet",3,"length","must be beetween 0 and 31 now "+length); int tmp = (1 << length) - 1 << start; mask &= (1 << length) - 1; return number & ~tmp | mask << start; } }