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| /** General formatted text print |
| * |
| * Print text formatted according the fmt parameter |
| * Print string formatted according the fmt parameter |
| * and variant arguments. Each formatting directive |
| * begins with \% (percentage) character and one of the |
| * following character: |
| * must have the following form: |
| * % [ flags ] [ width ] [ .precision ] [ type ] conversion |
| * |
| * \% Prints the percentage character. |
| * FLAGS: |
| * # Force to print prefix. For conversion %o is prefix 0, for %x and %X are prefixes 0x and 0X and for conversion %b is prefix 0b. |
| * - Align to left. |
| * + Print positive sign just as negative. |
| * (space) If printed number is positive and '+' flag is not set, print space in place of sign. |
| * 0 Print 0 as padding instead of spaces. Zeroes are placed between sign and the rest of number. This flag is ignored if '-' flag is specified. |
| * |
| * WIDTH: |
| * Specify minimal width of printed argument. If it is bigger, width is ignored. |
| * If width is specified with a '*' character instead of number, width is taken from parameter list. |
| * Int parameter expected before parameter for processed conversion specification. |
| * If this value is negative it is taken its absolute value and the '-' flag is set. |
| * |
| * s The next variant argument is treated as char* |
| * and printed as a NULL terminated string. |
| * PRECISION: |
| * Value precision. For numbers it specifies minimum valid numbers. |
| * Smaller numbers are printed with leading zeroes. Bigger numbers are not affected. |
| * Strings with more than precision characters are cutted of. |
| * Just as width could be '*' used instead a number. |
| * A int value is then expected in parameters. When both width and precision are specified using '*', |
| * first parameter is used for width and second one for precision. |
| * |
| * TYPE: |
| * hh signed or unsigned char |
| * h signed or usigned short |
| * signed or usigned int (default value) |
| * l signed or usigned long int |
| * ll signed or usigned long long int |
| * z size_t type |
| * |
| * |
| * CONVERSIONS: |
| * |
| * % Print percentage character. |
| * |
| * c The next variant argument is treated as a single char. |
| * c Print single character. |
| * |
| * p The next variant argument is treated as a maximum |
| * bit-width integer with respect to architecture |
| * and printed in full hexadecimal width. |
| * s Print zero terminated string. If a NULL value is passed as value, "(NULL)" is printed instead. |
| * |
| * P, p Print value of a pointer. Void * value is expected and it is printed in hexadecimal notation with prefix |
| * ( as with %#X or %#x for 32bit or %#X / %#x for 64bit long pointers) |
| * |
| * P As with 'p', but '0x' is prefixed. |
| * b Print value as unsigned binary number. Prefix is not printed by default. (Nonstandard extension.) |
| * |
| * o Print value as unsigned octal number. Prefix is not printed by default. |
| * |
| * q The next variant argument is treated as a 64b integer |
| * and printed in full hexadecimal width. |
| * d,i Print signed decimal number. There is no difference between d and i conversion. |
| * |
| * Q As with 'q', but '0x' is prefixed. |
| * u Print unsigned decimal number. |
| * |
| * l The next variant argument is treated as a 32b integer |
| * and printed in full hexadecimal width. |
| * |
| * L As with 'l', but '0x' is prefixed. |
| * |
| * w The next variant argument is treated as a 16b integer |
| * and printed in full hexadecimal width. |
| * |
| * W As with 'w', but '0x' is prefixed. |
| * |
| * b The next variant argument is treated as a 8b integer |
| * and printed in full hexadecimal width. |
| * |
| * B As with 'b', but '0x' is prefixed. |
| * |
| * d The next variant argument is treated as integer |
| * and printed in standard decimal format (only significant |
| * digits). |
| * |
| * x The next variant argument is treated as integer |
| * and printed in standard hexadecimal format (only significant |
| * digits). |
| * |
| * X As with 'x', but '0x' is prefixed. |
| * |
| * X, x Print hexadecimal number with upper- or lower-case. Prefix is not printed by default. |
| * |
| * All other characters from fmt except the formatting directives |
| * are printed in verbatim. |
| * |
| * @param fmt Formatting NULL terminated string. |
| * @return count of printed characters or negative value on fail. |
| */ |
| int printf(const char *fmt, ...) |
| { |