1*c9945492SAndroid Build Coastguard Worker #include "complex_impl.h" 2*c9945492SAndroid Build Coastguard Worker 3*c9945492SAndroid Build Coastguard Worker /* acosh(z) = ±i acos(z) */ 4*c9945492SAndroid Build Coastguard Worker cacosh(double complex z)5*c9945492SAndroid Build Coastguard Workerdouble complex cacosh(double complex z) 6*c9945492SAndroid Build Coastguard Worker { 7*c9945492SAndroid Build Coastguard Worker int zineg = signbit(cimag(z)); 8*c9945492SAndroid Build Coastguard Worker 9*c9945492SAndroid Build Coastguard Worker z = cacos(z); 10*c9945492SAndroid Build Coastguard Worker if (zineg) return CMPLX(cimag(z), -creal(z)); 11*c9945492SAndroid Build Coastguard Worker else return CMPLX(-cimag(z), creal(z)); 12*c9945492SAndroid Build Coastguard Worker } 13