github.com/afumu/libc@v0.0.6/musl/src/stdio/fgetpos.c (about)

     1  #include "stdio_impl.h"
     2  
     3  int fgetpos(FILE *restrict f, fpos_t *restrict pos)
     4  {
     5  	off_t off = __ftello(f);
     6  	if (off < 0) return -1;
     7  	*(long long *)pos = off;
     8  	return 0;
     9  }
    10  
    11  weak_alias(fgetpos, fgetpos64);