3 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
4 long double complex cacosl(long double complex z
)
10 #define PI_2 1.57079632679489661923132169163975144L
11 long double complex cacosl(long double complex z
)
14 return CMPLXL(PI_2
- creall(z
), -cimagl(z
));