github.com/afumu/libc@v0.0.6/musl/src/complex/cacosl.c (about)

     1  #include "complex_impl.h"
     2  
     3  #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
     4  long double complex cacosl(long double complex z)
     5  {
     6  	return cacos(z);
     7  }
     8  #else
     9  // FIXME
    10  #define PI_2 1.57079632679489661923132169163975144L
    11  long double complex cacosl(long double complex z)
    12  {
    13  	z = casinl(z);
    14  	return CMPLXL(PI_2 - creall(z), -cimagl(z));
    15  }
    16  #endif