Lines Matching refs:z
120 double p, z, thi, tlo, xhi, xlo; in large_gam() local
123 z = 1 / (x * x); in large_gam()
124 p = Pa0 + z * (Pa1 + z * (Pa2 + z * (Pa3 + z * (Pa4 + z * (Pa5 + in large_gam()
125 z * (Pa6 + z * Pa7)))))); in large_gam()
180 ratfun_gam(double z, double c) in ratfun_gam() argument
185 q = Q0 + z * (Q1 + z * (Q2 + z * (Q3 + z * (Q4 + z * (Q5 + in ratfun_gam()
186 z * (Q6 + z * (Q7 + z * Q8))))))); in ratfun_gam()
187 p = P0 + z * (P1 + z * (P2 + z * (P3 + z * P4))); in ratfun_gam()
191 thi = (float)z; in ratfun_gam()
192 tlo = (z - thi) + c; in ratfun_gam()
193 tlo *= (thi + z); in ratfun_gam()
306 double y, z; in neg_gam() local
312 z = y - x; in neg_gam()
313 if (z > 0.5) in neg_gam()
314 z = 1 - z; in neg_gam()
320 if (z < 0.25) in neg_gam()
321 z = sinpi(z); in neg_gam()
323 z = cospi(0.5 - z); in neg_gam()
333 lsine = __log__D(M_PI / z); /* = TRUNC(log(u)) + small */ in neg_gam()
337 z = (y + lg.a) + lg.b; in neg_gam()
338 y = __exp__D(y, z); in neg_gam()
350 return (M_PI / (y * z)); in neg_gam()