fusl/src/complex/ccosl.c

#include "libm.h"

#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double complex ccosl(long double complex z) {
  return ccos(z);
}
#else
long double complex ccosl(long double complex z) {
  return ccoshl(CMPLXL(-cimagl(z), creall(z)));
}
#endif