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

     1  #include "complex_impl.h"
     2  
     3  // FIXME
     4  
     5  float complex cacosf(float complex z)
     6  {
     7  	z = casinf(z);
     8  	return CMPLXF((float)M_PI_2 - crealf(z), -cimagf(z));
     9  }