my $ref = [ 5.0e-5,4.2e-5,4.3e-5,4.4e-5,4.4e-5,4.2e-5,4.2e-5,4.0e-5]; 

    use Inline C => <<'END_OF_C_CODE';

    void test(SV* sv, ...) {

      I32 i;
      I32 arrayLen;
      AV* data;
      float retval;
      SV** pvalue;

      Inline_Stack_Vars;
      data = SvUV(Inline_Stack_Item(0));

      /* Determine the length of the array */
      arrayLen = av_len(data);

      // sort 
      sortsv(AvARRAY(data),arrayLen+1,Perl_sv_cmp_locale);

      for (i = 0; i < arrayLen+1; i++) {

        pvalue = av_fetch(data,i,0);  /* fetch the scalar located at i .*/
        retval = SvNV(*pvalue);  /* dereference the scalar into a number. */

        printf("%f \n",newSVnv(retval));
      }
    }

    END_OF_C_CODE