Lines Matching full:atan
52 case 1: return y; /* atan(+-0,+anything)=+-0 */
53 case 2: return pi+tiny;/* atan(+0,-anything) = pi */
54 case 3: return -pi-tiny;/* atan(-0,-anything) =-pi */
64 case 0: return pi_o_4+tiny;/* atan(+INF,+INF) */
65 case 1: return -pi_o_4-tiny;/* atan(-INF,+INF) */
66 case 2: return (float)3.0*pi_o_4+tiny;/*atan(+INF,-INF)*/
67 case 3: return (float)-3.0*pi_o_4-tiny;/*atan(-INF,-INF)*/
71 case 0: return zero ; /* atan(+...,+INF) */
72 case 1: return -zero ; /* atan(-...,+INF) */
73 case 2: return pi+tiny ; /* atan(+...,-INF) */
74 case 3: return -pi-tiny ; /* atan(-...,-INF) */
90 case 0: return z ; /* atan(+,+) */
91 case 1: return -z ; /* atan(-,+) */
92 case 2: return pi-(z-pi_lo);/* atan(+,-) */
94 return (z-pi_lo)-pi;/* atan(-,-) */
