+ if( signisneg )
+ _putch('-');
+ else if( bForceSign )
+ _putch('+');
+ else {
+ }
+ _putch('0');
+ _putch('x');
+ _putch(cDIGITS[whole]);
+ if( significand || bForcePoint )
+ _putch('.');
+ // Fractional
+ while( significand && Precision -- )
+ {
+ uint8_t val = significand >> (64-4);
+ _putch(cDIGITS[val]);
+ significand <<= 4;
+ }
+ _putch('p');
+ //ret += _printf_itoa(puts_cb, puts_h, exp_16, 16, bCapitals, TRUE, '+', 0, 0, '\0', 0);
+ ret += _printf_itoa(puts_cb, puts_h, exponent, 10, bCapitals, TRUE, '+', 0, 0, '\0', 0);
+
+ #undef _putch
+ return ret;
+}
+
+#if 0
+size_t _printf_itoa_fixed(printf_putch_t putch_cb, void *putch_h, uint64_t num, size_t Base)
+{
+ uint64_t den;
+ size_t ret = 0;
+
+ den = 1ULL << (64-1);
+
+ while( den )
+ {
+ putch_cb(putch_h, cDIGITS[num / den]);
+ ret ++;
+ num %= den;
+ den /= Base;
+ }
+
+ return ret;
+}
+
+size_t _printf_ftoa_dec(printf_putch_t putch_cb, void *putch_h, long double num, enum eFPN Notation, int Precision, int bForcePoint, int bForceSign, int bCapitals)
+{
+ size_t ret = 0;
+ int i;
+
+ #define _putch(_ch) do{\
+ putch_cb(putch_h, bCapitals ? toupper(_ch) : _ch), ret++;\
+ }while(0)
+
+ uint64_t significand;
+ int16_t exponent;
+ int signisneg;
+ int rv = expand_double(num, &significand, &exponent, &signisneg);
+ switch(rv)
+ {
+ // 0: No errors, nothing special
+ case 0:
+ break;
+ // 1: Subnormals
+ case 1:
+ // TODO: Subnormal = 0?
+ break;
+ // 2: Infinity
+ case 2:
+ _putch('i');
+ _putch('n');
+ _putch('f');
+ return 3;
+ case 3:
+ _putch('N');
+ _putch('a');
+ _putch('N');
+ return 3;
+ }
+
+ uint64_t whole, part;
+ int pre_zeros, post_zeros;
+
+ #define XXX 0
+ if( Notation == FPN_SCI )
+ {
+ }
+ else if( exponent < 0 )
+ {
+ whole = 0;
+ part = XXX;
+ pre_zeros = 0;
+ post_zeros = XXX;
+ }
+ else if( exponent >= 64 )
+ {
+ part = 0;
+ whole = XXX;
+ pre_zeros = XXX;
+ post_zeros = 0;
+ }
+ else
+ {
+ // Split into fixed point
+ whole = (1 << exponent) | (significand >> (64-exponent));
+ part = significand << exponent;
+ pre_zeros = 0;
+ post_zeros = 0;
+ }
+
+
+ // Whole portion
+ ret += _printf_itoa(putch_cb, putch_h, whole, 10, FALSE, FALSE, '\0', 0, 0, '\0', FALSE);
+ for(i = pre_zeros; i --; ) _putch('0');
+ // TODO: Conditional point
+ _putch('-');
+ for(i = post_zeros; i--; ) _putch('0');
+ ret += _printf_itoa_fixed(putch_cb, putch_h, part, 10);
+
+ #undef _putch
+
+ return 0;
+}
+#endif
+
+size_t _printf_ftoa(printf_puts_t puts_cb, void *puts_h, long double num, size_t Base, enum eFPN Notation, int Precision, int bForcePoint, int bForceSign, int bCapitals)
+{
+ uint64_t significand;
+ int16_t exponent;
+ int signisneg;
+ int rv, i;
+ size_t ret = 0;
+
+ #define _putch(_ch) do{\
+ char __ch = (bCapitals ? toupper(_ch) : _ch);\
+ puts_cb(puts_h, &__ch, 1); \
+ ret ++;\
+ }while(0)
+
+ if( Base <= 1 || Base > 16 )
+ return 0;
+
+ rv = expand_double(num, &significand, &exponent, &signisneg);
+ switch(rv)
+ {
+ // 0: No errors, nothing special
+ case 0:
+ break;
+ // 1: Subnormals
+ case 1:
+ // TODO: Subnormal = 0?
+ break;
+ // 2: Infinity
+ case 2:
+ _putch('i');
+ _putch('n');
+ _putch('f');
+ return 3;
+ case 3:
+ _putch('N');
+ _putch('a');
+ _putch('N');
+ return 3;
+ }
+
+ // - Used as 0/1 bools in arithmatic later on
+ bForcePoint = !!bForcePoint;
+ bForceSign = !!bForceSign;
+
+ // Apply default to precision
+ if( Precision == -1 )
+ Precision = 6;
+
+ if( num < 0 )
+ num = -num;
+
+ // Select optimum type
+ if( Notation == FPN_SHORTEST )
+ {
+ //TODO:
+ //int first_set_sig = BSL(significand);
+ // bSign+log10(num)+1+precision vs. bSign+1+1+precision+1+1+log10(exponent)
+ int log10_num = exponent * 301 / 1000; // log_10(2) = 0.30102999566...
+ int log10_exp10 = 2;
+ int sci_len = (signisneg || bForceSign) + 2 + (Precision-1) + 2 + log10_exp10;
+ int std_whole_len = (log10_num > 0 ? log10_num : 1);
+ int std_len = (signisneg || bForceSign) + std_whole_len + 1 + (Precision-std_whole_len);
+ if( sci_len > std_len ) {
+ Precision -= std_whole_len;
+ Notation = FPN_STD;
+ }
+ else {
+ Precision -= 1;
+ Notation = FPN_SCI;
+ }
+ }
+
+ double precision_max = 1;
+ for(i = Precision; i--; )
+ precision_max /= Base;
+
+ // Determine scientific's exponent and starting denominator
+ double den = 1;
+ int sci_exponent = 0;
+ if( Notation == FPN_SCI )
+ {
+ if( num < 1 )
+ {
+ while(num < 1)
+ {
+ num *= Base;
+ sci_exponent ++;
+ }
+ }
+ else if( num >= Base )
+ {
+ while(num >= Base)
+ {
+ num /= Base;
+ sci_exponent ++;
+ }
+ }
+ else
+ {
+ // no exponent
+ }
+ den = 1;
+ }
+ else if( num != 0.0 )
+ {
+ while( den <= num )
+ den *= Base;
+ den /= Base;
+ }
+
+ // Leading sign
+ if( signisneg )
+ _putch('-');
+ else if( bForceSign )
+ _putch('+');
+ else {
+ }
+
+ num += precision_max/10 * 4.999;
+
+ int value;
+ // Whole section
+ do
+ {
+ num = _longdiv(num, den, &value);
+ _putch(cDIGITS[value]);
+ den /= Base;
+ } while( den >= 1 );
+
+ // Decimal point (if needed/forced)
+ if( Precision > 0 || bForcePoint )
+ _putch('.');
+ // Decimal section
+ for(i = Precision; i--; )
+ {
+ num = _longdiv(num, den, &value);
+ _putch(cDIGITS[value]);
+ den /= Base;
+ }
+
+ if( Notation == FPN_SCI )
+ {
+ if( Base == 16 )
+ _putch('p');
+ else
+ _putch('e');
+ ret += _printf_itoa(puts_cb, puts_h, sci_exponent, Base, FALSE, TRUE, '+', 3, 0, '\0', FALSE);
+ }
+
+ #undef _putch
+
+ return ret;