github.com/afumu/libc@v0.0.6/musl/src/math/llrint.c (about)

     1  #include <math.h>
     2  
     3  /* uses LLONG_MAX > 2^53, see comments in lrint.c */
     4  
     5  long long llrint(double x)
     6  {
     7  	return rint(x);
     8  }