1*c9945492SAndroid Build Coastguard Worker #include "libm.h" 2*c9945492SAndroid Build Coastguard Worker 3*c9945492SAndroid Build Coastguard Worker #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 tanl(long double x)4*c9945492SAndroid Build Coastguard Workerlong double tanl(long double x) 5*c9945492SAndroid Build Coastguard Worker { 6*c9945492SAndroid Build Coastguard Worker return tan(x); 7*c9945492SAndroid Build Coastguard Worker } 8*c9945492SAndroid Build Coastguard Worker #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 tanl(long double x)9*c9945492SAndroid Build Coastguard Workerlong double tanl(long double x) 10*c9945492SAndroid Build Coastguard Worker { 11*c9945492SAndroid Build Coastguard Worker union ldshape u = {x}; 12*c9945492SAndroid Build Coastguard Worker long double y[2]; 13*c9945492SAndroid Build Coastguard Worker unsigned n; 14*c9945492SAndroid Build Coastguard Worker 15*c9945492SAndroid Build Coastguard Worker u.i.se &= 0x7fff; 16*c9945492SAndroid Build Coastguard Worker if (u.i.se == 0x7fff) 17*c9945492SAndroid Build Coastguard Worker return x - x; 18*c9945492SAndroid Build Coastguard Worker if (u.f < M_PI_4) { 19*c9945492SAndroid Build Coastguard Worker if (u.i.se < 0x3fff - LDBL_MANT_DIG/2) { 20*c9945492SAndroid Build Coastguard Worker /* raise inexact if x!=0 and underflow if subnormal */ 21*c9945492SAndroid Build Coastguard Worker FORCE_EVAL(u.i.se == 0 ? x*0x1p-120f : x+0x1p120f); 22*c9945492SAndroid Build Coastguard Worker return x; 23*c9945492SAndroid Build Coastguard Worker } 24*c9945492SAndroid Build Coastguard Worker return __tanl(x, 0, 0); 25*c9945492SAndroid Build Coastguard Worker } 26*c9945492SAndroid Build Coastguard Worker n = __rem_pio2l(x, y); 27*c9945492SAndroid Build Coastguard Worker return __tanl(y[0], y[1], n&1); 28*c9945492SAndroid Build Coastguard Worker } 29*c9945492SAndroid Build Coastguard Worker #endif 30