3 //             2014-2019, PALANDesign Hannover, Germany
151     for(s = str; *s && maxsize--; ++s);  in _strnlen_s()
152     return (unsigned int)(s - str);  in _strnlen_s()
155 // internal test if char is a digit (0-9)
167         i = i * 10U + (unsigned int)(*((*str)++) - '0');  in _atoi()
172 // output the specified string in reverse, taking care of any zero-padding
188         out(buf[--len], buffer, idx++, maxlen);  in _out_rev()
193         while(idx - start_idx < width) {  in _out_rev()
208             width--;  in _ntoa_format()
221             len--;  in _ntoa_format()
223                 len--;  in _ntoa_format()
242             buf[len++] = '-';  in _ntoa_format()
271 …        buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;  in _ntoa_long()
296 …        buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;  in _ntoa_long_long()
327     if(value < -DBL_MAX)  in _ftoa()
328         return _out_rev(out, buffer, idx, maxlen, "fni-", 4, width, flags);  in _ftoa()
334 …// standard printf behavior is to print EVERY whole number digit -- which could be 100s of charact…  in _ftoa()
335     if((value > PRINTF_MAX_FLOAT) || (value < -PRINTF_MAX_FLOAT)) {  in _ftoa()
347         value = 0 - value;  in _ftoa()
357         prec--;  in _ftoa()
361     double tmp = (value - whole) * pow10[prec];  in _ftoa()
363     diff = tmp - frac;  in _ftoa()
381         diff = value - (double)whole;  in _ftoa()
384             // 1.5 -> 2, but 2.5 -> 2  in _ftoa()
392             --count;  in _ftoa()
399         while((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) {  in _ftoa()
419             width--;  in _ftoa()
428             buf[len++] = '-';  in _ftoa()
442 // internal ftoa variant for exponential floating-point type, contributed by Martijn Jasperse <m.ja…
447     if((value != value) || (value > DBL_MAX) || (value < -DBL_MAX)) {  in _etoa()
454         value = -value;  in _etoa()
470     int exp2 = (int)((conv.U >> 52U) & 0x07FFU) - 1023;           // effectively log2  in _etoa()
471 …conv.U = (conv.U & ((1ULL << 52U) - 1U)) | (1023ULL << 52U);  // drop the exponent so conv.F is no…  in _etoa()
473 …int expval = (int)(0.1760912590558 + exp2 * 0.301029995663981 + (conv.F - 1.5) * 0.289529654602168…  in _etoa()
476     const double z  = expval * 2.302585092994046 - exp2 * 0.6931471805599453;  in _etoa()
480     conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14)))));  in _etoa()
483         expval--;  in _etoa()
487     // the exponent format is "%+03d" and largest value is "307", so set aside 4-5 characters  in _etoa()
488     unsigned int minwidth = ((expval < 100) && (expval > -100)) ? 4U : 5U;  in _etoa()
492         // do we want to fall-back to "%f" mode?  in _etoa()
493         if((value >= 1e-4) && (value < 1e6)) {  in _etoa()
495                 prec = (unsigned)((int)prec - expval - 1);  in _etoa()
508                 --prec;  in _etoa()
516         // we didn't fall-back so subtract the characters required for the exponent  in _etoa()
517         fwidth -= minwidth;  in _etoa()
535 …idx = _ftoa(out, buffer, idx, maxlen, negative ? -value : value, prec, fwidth, flags & ~FLAGS_ADAP…  in _etoa()
542 … _ntoa_long(out, buffer, idx, maxlen, (expval < 0) ? -expval : expval, expval < 0, 10, 0, minwidth…  in _etoa()
544         // might need to right-pad spaces  in _etoa()
546             while(idx - start_idx < width) out(' ', buffer, idx++, maxlen);  in _etoa()
587                 case '-':  in lv_vsnprintf_inner()
622                 width = (unsigned int) - w;  in lv_vsnprintf_inner()
690             case 'o' :  in lv_vsnprintf_inner()
710                     else if(*format == 'o') {  in lv_vsnprintf_inner()
725                     // no plus or space flag for u, x, X, o, b  in lv_vsnprintf_inner()
741 …g_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, b…  in lv_vsnprintf_inner()
747 … _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, b…  in lv_vsnprintf_inner()
753 …= _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, b…  in lv_vsnprintf_inner()
761                         va_copy(copy, *vaf->va);  in lv_vsnprintf_inner()
762                         idx += lv_vsnprintf_inner(out, buffer + idx, maxlen - idx, vaf->fmt, copy);  in lv_vsnprintf_inner()
825                     unsigned int l = _strnlen_s(p, precision ? precision : (size_t) -1);  in lv_vsnprintf_inner()
836                     while((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) {  in lv_vsnprintf_inner()
862     out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);  in lv_vsnprintf_inner()