The SVGNumber interface:

Note that contrary to what you may expect, the baseVal and animVal attributes of
SVGAnimatedNumber are not of type SVGNumber. In fact they are of type float.
SVGNumber is only obtainable via createSVGNumber and SVGNumberList.


SVGICCColor has an SVGNumberList colors

SVGTextPositioningElement           has an SVGAnimatedNumberList rotate
SVGFEColorMatrixElement             has an SVGAnimatedNumberList values
SVGComponentTransferFunctionElement has an SVGAnimatedNumberList tableValues
SVGFEConvolveMatrixElement          has an SVGAnimatedNumberList kernelMatrix