curveTo          3488 lib/pdf/xpdf/GfxState.cc void GfxSubpath::curveTo(double x1, double y1, double x2, double y2,
curveTo          3574 lib/pdf/xpdf/GfxState.cc void GfxPath::curveTo(double x1, double y1, double x2, double y2,
curveTo           116 lib/pdf/xpdf/SplashPath.cc SplashError SplashPath::curveTo(SplashCoord x1, SplashCoord y1,