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

     1  #include <math.h>
     2  
     3  long double sqrtl(long double x)
     4  {
     5  	/* FIXME: implement in C, this is for LDBL_MANT_DIG == 64 only */
     6  	return sqrt(x);
     7  }