Lines Matching defs:pi
23 * ARG (x+iy) = pi - arctan[y/(-x)] ... if x < 0,
30 * ATAN2(+-0, -(anything but NaN)) is +-pi ;
31 * ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2;
33 * ATAN2(+-(anything but INF and NaN), -INF) is +-pi;
34 * ATAN2(+-INF,+INF ) is +-pi/4 ;
35 * ATAN2(+-INF,-INF ) is +-3pi/4;
36 * ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2;
56 pi = 3.1415926535897931160E+00; /* 0x400921FB, 0x54442D18 */
82 case 2: return pi+tiny;/* atan(+0,-anything) = pi */
83 case 3: return -pi-tiny;/* atan(-0,-anything) =-pi */
102 case 2: return pi+tiny ; /* atan(+...,-INF) */
103 case 3: return -pi-tiny ; /* atan(-...,-INF) */
121 case 2: return pi-(z-pi_lo);/* atan(+,-) */
123 return (z-pi_lo)-pi;/* atan(-,-) */
