Searched refs:ieee_atan (Results 1 - 3 of 3) sorted by relevance

/external/fdlibm/
H A De_atan2.c74 if((hx-0x3ff00000|lx)==0) return ieee_atan(y); /* x=1.0 */
81 case 1: return y; /* ieee_atan(+-0,+anything)=+-0 */
82 case 2: return pi+tiny;/* ieee_atan(+0,-anything) = pi */
83 case 3: return -pi-tiny;/* ieee_atan(-0,-anything) =-pi */
93 case 0: return pi_o_4+tiny;/* ieee_atan(+INF,+INF) */
94 case 1: return -pi_o_4-tiny;/* ieee_atan(-INF,+INF) */
95 case 2: return 3.0*pi_o_4+tiny;/*ieee_atan(+INF,-INF)*/
96 case 3: return -3.0*pi_o_4-tiny;/*ieee_atan(-INF,-INF)*/
100 case 0: return zero ; /* ieee_atan(+...,+INF) */
101 case 1: return -zero ; /* ieee_atan(
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H A Ds_atan.c15 /* ieee_atan(x)
17 * 1. Reduce x to positive by ieee_atan(x) = -ieee_atan(-x).
22 * [0,7/16] ieee_atan(x) = t-t^3*(a1+t^2*(a2+...(a10+t^2*a11)...)
23 * [7/16,11/16] ieee_atan(x) = ieee_atan(1/2) + ieee_atan( (t-0.5)/(1+t/2) )
24 * [11/16.19/16] ieee_atan(x) = ieee_atan( 1 ) + ieee_atan( (
86 double ieee_atan(double x) function
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H A Dfdlibm.h104 extern double ieee_atan __P((double));

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