Lines Matching +full:high +full:- +full:accuracy
16 * __kernel_tan ... tangent function on [-pi/4,pi/4]
21 * [-PI/4, +PI/4]. Reduce the argument x to y1+y2 = x-k*pi/2
22 * in [-pi/4 , +pi/4], and let n = k mod 4.
26 * ----------------------------------------------------------
28 * 1 C -S -1/T
29 * 2 -S -C T
30 * 3 -C S -1/T
31 * ----------------------------------------------------------
35 * trig(+-INF) is NaN, with signals;
38 * Accuracy:
55 /* High word of x. */ in tan()
61 if(ix<0x3e400000) /* x < 2**-27 */ in tan()
67 else if (ix>=0x7ff00000) return x-x; /* NaN */ in tan()
72 return __kernel_tan(y[0],y[1],1-((n&1)<<1)); /* 1 -- n even in tan()
73 -1 -- n odd */ in tan()