23 bool SkCubicClipper::ChopMonoAtY(const SkPoint pts[4], SkScalar y, SkScalar* t) {  in ChopMonoAtY()
24     SkScalar ycrv[4];  in ChopMonoAtY()
34     SkScalar t1 = ycrv[0] / (ycrv[0] - ycrv[3]);  in ChopMonoAtY()
37     const SkScalar tol = SK_Scalar1 / 16384;  // This leaves 2 fixed noise bits.  in ChopMonoAtY()
38     SkScalar t0;  in ChopMonoAtY()
44         SkScalar y01   = SkScalarInterp(ycrv[0], ycrv[1], t0);  in ChopMonoAtY()
45         SkScalar y12   = SkScalarInterp(ycrv[1], ycrv[2], t0);  in ChopMonoAtY()
46         SkScalar y23   = SkScalarInterp(ycrv[2], ycrv[3], t0);  in ChopMonoAtY()
47         SkScalar y012  = SkScalarInterp(y01,  y12,  t0);  in ChopMonoAtY()
48         SkScalar y123  = SkScalarInterp(y12,  y23,  t0);  in ChopMonoAtY()
49         SkScalar y0123 = SkScalarInterp(y012, y123, t0);  in ChopMonoAtY()
50         SkScalar yder  = (y123 - y012) * 3;  in ChopMonoAtY()
67     SkScalar tNeg, tPos;    // Negative and positive function parameters.  in ChopMonoAtY()
83     const SkScalar tol = SK_Scalar1 / 65536;  // 1 for fixed, 1e-5 for float.  in ChopMonoAtY()
86         SkScalar tMid = (tPos + tNeg) / 2;  in ChopMonoAtY()
87         SkScalar y01   = SkScalarInterp(ycrv[0], ycrv[1], tMid);  in ChopMonoAtY()
88         SkScalar y12   = SkScalarInterp(ycrv[1], ycrv[2], tMid);  in ChopMonoAtY()
89         SkScalar y23   = SkScalarInterp(ycrv[2], ycrv[3], tMid);  in ChopMonoAtY()
90         SkScalar y012  = SkScalarInterp(y01,     y12,     tMid);  in ChopMonoAtY()
91         SkScalar y123  = SkScalarInterp(y12,     y23,     tMid);  in ChopMonoAtY()
92         SkScalar y0123 = SkScalarInterp(y012,    y123,    tMid);  in ChopMonoAtY()
124     const SkScalar ctop = fClip.fTop;  in clipCubic()
125     const SkScalar cbot = fClip.fBottom;  in clipCubic()
130     SkScalar t;  in clipCubic()