github.com/afumu/libc@v0.0.6/musl/src/math/__invtrigl.h (about)

     1  #include <features.h>
     2  
     3  /* shared by acosl, asinl and atan2l */
     4  #define pio2_hi __pio2_hi
     5  #define pio2_lo __pio2_lo
     6  hidden extern const long double pio2_hi, pio2_lo;
     7  
     8  hidden long double __invtrigl_R(long double z);