WebSVN – HelenOS-historic – Diff – /boot/trunk/generic/printf.c



 *
 * @param num   Number containing digits.
 * @param width Count of digits to print.
 *
 */
static void print_fixed_hex(const uint64_t num, const int width)
{
    int i;
   
    for (i = width * 8 - 4; i >= 0; i -= 4)
        write(digits + ((num >> i) & 0xf), 1);

 * @param num  Number to print.
 * @param base Base to print the number in (should
 *             be in range 2 .. 16).
 *
 */
static void print_number(const unative_t num, const unsigned int base)
{
    int val = num;
    char d[sizeof(unative_t) * 8 + 1];      /* this is good enough even for base == 2 */
    int i = sizeof(unative_t) * 8 - 1;
   
    do {
        d[i--] = digits[val % base];
    } while (val /= base);
   
    d[sizeof(unative_t) * 8] = 0;  
    puts(&d[i + 1]);
}
 
 
/** General formatted text print

                     * Hexadecimal conversions with fixed width.
                     */
                    case 'P':
                        puts("0x");
                    case 'p':
                        print_fixed_hex(va_arg(ap, unative_t), sizeof(unative_t));
                        goto loop;
                   
                    case 'Q':
                        puts("0x");
                    case 'q':
                        print_fixed_hex(va_arg(ap, uint64_t), INT64);
                        goto loop;
                   
                    case 'L':
                        puts("0x");
                    case 'l':
                        print_fixed_hex(va_arg(ap, unative_t), INT32);
                        goto loop;
                   
                    case 'W':
                        puts("0x");
                    case 'w':
                        print_fixed_hex(va_arg(ap, unative_t), INT16);
                        goto loop;
                   
                    case 'B':
                        puts("0x");
                    case 'b':
                        print_fixed_hex(va_arg(ap, unative_t), INT8);
                        goto loop;
                   
                    /*
                     * Decimal and hexadecimal conversions.
                     */
                    case 'd':
                        print_number(va_arg(ap, unative_t), 10);
                        goto loop;
                   
                    case 'X':
                        puts("0x");
                    case 'x':
                        print_number(va_arg(ap, unative_t), 16);
                        goto loop;
                   
                    /*
                     * Bad formatting.
                     */

Rev 1763	Rev 1779
Line 54...	Line 54...
54	*	54	*
55	* @param num Number containing digits.	55	* @param num Number containing digits.
56	* @param width Count of digits to print.	56	* @param width Count of digits to print.
57	*	57	*
58	*/	58	*/
59	static void print_fixed_hex(const __u64 num, const int width)	59	static void print_fixed_hex(const uint64_t num, const int width)
60	{	60	{
61	int i;	61	int i;
62		62
63	for (i = width * 8 - 4; i >= 0; i -= 4)	63	for (i = width * 8 - 4; i >= 0; i -= 4)
64	write(digits + ((num >> i) & 0xf), 1);	64	write(digits + ((num >> i) & 0xf), 1);
Line 73...	Line 73...
73	* @param num Number to print.	73	* @param num Number to print.
74	* @param base Base to print the number in (should	74	* @param base Base to print the number in (should
75	* be in range 2 .. 16).	75	* be in range 2 .. 16).
76	*	76	*
77	*/	77	*/
78	static void print_number(const __native num, const unsigned int base)	78	static void print_number(const unative_t num, const unsigned int base)
79	{	79	{
80	int val = num;	80	int val = num;
81	char d[sizeof(__native) * 8 + 1]; /* this is good enough even for base == 2 */	81	char d[sizeof(unative_t) * 8 + 1]; /* this is good enough even for base == 2 */
82	int i = sizeof(__native) * 8 - 1;	82	int i = sizeof(unative_t) * 8 - 1;
83		83
84	do {	84	do {
85	d[i--] = digits[val % base];	85	d[i--] = digits[val % base];
86	} while (val /= base);	86	} while (val /= base);
87		87
88	d[sizeof(__native) * 8] = 0;	88	d[sizeof(unative_t) * 8] = 0;
89	puts(&d[i + 1]);	89	puts(&d[i + 1]);
90	}	90	}
91		91
92		92
93	/** General formatted text print	93	/** General formatted text print
Line 180...	Line 180...
180	* Hexadecimal conversions with fixed width.	180	* Hexadecimal conversions with fixed width.
181	*/	181	*/
182	case 'P':	182	case 'P':
183	puts("0x");	183	puts("0x");
184	case 'p':	184	case 'p':
185	print_fixed_hex(va_arg(ap, __native), sizeof(__native));	185	print_fixed_hex(va_arg(ap, unative_t), sizeof(unative_t));
186	goto loop;	186	goto loop;
187		187
188	case 'Q':	188	case 'Q':
189	puts("0x");	189	puts("0x");
190	case 'q':	190	case 'q':
191	print_fixed_hex(va_arg(ap, __u64), INT64);	191	print_fixed_hex(va_arg(ap, uint64_t), INT64);
192	goto loop;	192	goto loop;
193		193
194	case 'L':	194	case 'L':
195	puts("0x");	195	puts("0x");
196	case 'l':	196	case 'l':
197	print_fixed_hex(va_arg(ap, __native), INT32);	197	print_fixed_hex(va_arg(ap, unative_t), INT32);
198	goto loop;	198	goto loop;
199		199
200	case 'W':	200	case 'W':
201	puts("0x");	201	puts("0x");
202	case 'w':	202	case 'w':
203	print_fixed_hex(va_arg(ap, __native), INT16);	203	print_fixed_hex(va_arg(ap, unative_t), INT16);
204	goto loop;	204	goto loop;
205		205
206	case 'B':	206	case 'B':
207	puts("0x");	207	puts("0x");
208	case 'b':	208	case 'b':
209	print_fixed_hex(va_arg(ap, __native), INT8);	209	print_fixed_hex(va_arg(ap, unative_t), INT8);
210	goto loop;	210	goto loop;
211		211
212	/*	212	/*
213	* Decimal and hexadecimal conversions.	213	* Decimal and hexadecimal conversions.
214	*/	214	*/
215	case 'd':	215	case 'd':
216	print_number(va_arg(ap, __native), 10);	216	print_number(va_arg(ap, unative_t), 10);
217	goto loop;	217	goto loop;
218		218
219	case 'X':	219	case 'X':
220	puts("0x");	220	puts("0x");
221	case 'x':	221	case 'x':
222	print_number(va_arg(ap, __native), 16);	222	print_number(va_arg(ap, unative_t), 16);
223	goto loop;	223	goto loop;
224		224
225	/*	225	/*
226	* Bad formatting.	226	* Bad formatting.
227	*/	227	*/

Subversion Repositories HelenOS-historic

(root)/boot/trunk/generic/printf.c – Rev 1763 → 1779