Lines Matching refs:eta2
300 arc->eta2 = atan2(sin(lambda2) / arc->b,
303 /* make sure we have eta1 <= eta2 <= eta1 + 2 PI */
304 arc->eta2 -= two_pi * floor((arc->eta2 - arc->eta1) / two_pi);
308 if ((lambda2 - lambda1 > M_PI) && (arc->eta2 - arc->eta1 < M_PI)) {
309 arc->eta2 += 2 * M_PI;
313 arc->eta2 = lambda2;
331 double a_cos_eta2 = arc->a * cos(arc->eta2);
332 double b_sin_eta2 = arc->b * sin(arc->eta2);
532 min_eta = MIN2(arc->eta1, arc->eta2);
533 max_eta = MAX2(arc->eta1, arc->eta2);
582 d_eta = (arc->eta2 - arc->eta1) / n;
