101     float mag2;  in Normalize()  local
102     if (isLengthNearlyZero(x, y, &mag2)) {  in Normalize()
108     if (SkScalarIsFinite(mag2)) {  in Normalize()
109         mag = sk_float_sqrt(mag2);  in Normalize()
130     float mag2 = dx * dx + dy * dy;  in Length()  local
131     if (SkScalarIsFinite(mag2)) {  in Length()
132         return sk_float_sqrt(mag2);  in Length()
149     float mag2;  in setLength()  local
150     if (isLengthNearlyZero(x, y, &mag2)) {  in setLength()
156     if (SkScalarIsFinite(mag2)) {  in setLength()
157         scale = length / sk_float_sqrt(mag2);  in setLength()
186     float mag2;  in setLengthFast()  local
187     if (isLengthNearlyZero(x, y, &mag2)) {  in setLengthFast()
193     if (SkScalarIsFinite(mag2)) {  in setLengthFast()
194         scale = length * sk_float_rsqrt(mag2);  // <--- this is the difference  in setLengthFast()