vstack.push(createConst(type, -fpv));
vstack.push(createConst(ifac, type, -fpv));
	final static void neg(AbstractX86Stream os, EmitterContext ec,			VirtualStack vstack, int type) {		final Item v = vstack.pop(type);		if (v.isConstant()) {			final double fpv = getFPValue(v);			vstack.push(createConst(type, -fpv));		} else {			// Prepare			final FPUStack fpuStack = vstack.fpuStack;			prepareForOperation(os, ec, vstack, fpuStack, v);			// Calculate			os.writeFCHS();			// Push result			vstack.push(v);		}	}