// formats axis values into a string and returns that string in rpt
static void report_util_axis_values(float* axis_value, char* rpt) {
    uint8_t idx;
    char axisVal[10];
    float unit_conv = 1.0; // unit conversion multiplier..default is mm
    rpt[0] = '\0';
    if (report_inches->get())
        unit_conv = 1.0 / MM_PER_INCH;
    for (idx = 0; idx < N_AXIS; idx++) {
        if (report_inches->get())
            sprintf(axisVal, "%4.4f", axis_value[idx] * unit_conv);  // Report inches to 4 decimals
        else
            sprintf(axisVal, "%4.3f", axis_value[idx] * unit_conv);  // Report mm to 3 decimals
        strcat(rpt, axisVal);
        if (idx < (N_AXIS - 1))
            strcat(rpt, ",");
    }
}