Lines Matching defs:roots
5 * Utility functions to find cubic and quartic roots,
10 * The functions return the number of non-complex roots and
24 * correct but multiple roots might be reported more
33 const double t0, const bool oneHint, double roots[4]) {
54 return SkDQuad::RootsReal(t2, t1, t0, roots);
57 return SkDCubic::RootsReal(t3, t2, t1, t0, roots);
64 int num = SkDCubic::RootsReal(t4, t3, t2, t1, roots);
66 if (approximately_zero(roots[i])) {
70 roots[num++] = 0;
78 int num = SkDCubic::RootsReal(t4, t4 + t3, -(t1 + t0), -t0, roots);
80 if (approximately_equal(roots[i], 1)) {
84 roots[num++] = 1;
114 int roots = SkDCubic::RootsReal(1, -p / 2, -r, r * p / 2 - q * q / 8, cubicRoots);
120 for (index = firstCubicRoot; index < roots; ++index) {
142 break; // prefer solutions without single quad roots
