> The mhttpd ODB displays and mhist truncate values of "float" and "double"
> floating point variables to 6 digits. In reality, "float" has 7 significant
> digits and "double" has 16. I recommend that db_sprintf() in odb.c be changed to
> read this:
> 
>       case TID_FLOAT:
>          sprintf(string, "%.7g", *(((float *) data) + index));
>          break;
>       case TID_DOUBLE:
>          sprintf(string, "%.16g", *(((double *) data) + index));
>          break;
> 
> K.O.

I had there

      case TID_FLOAT:
         if (ss_isnan(*(((float *) data) + index)))
            sprintf(string, "NAN");
         else
            sprintf(string, "%g", *(((float *) data) + index));
         break;
      case TID_DOUBLE:
         if (ss_isnan(*(((double *) data) + index)))
            sprintf(string, "NAN");
         else
            sprintf(string, "%lg", *(((double *) data) + index));
         break;

so I assumed that "%g" takes care of the maximal resolution. But apparently it does
not. So I changed it as you proposed.