1 // SPDX-License-Identifier: GPL-2.0-only
2 /* -*- linux-c -*- ------------------------------------------------------- *
5  *   Copyright 2007 rPath, Inc. - All Rights Reserved
7  * ----------------------------------------------------------------------- */
10  * Oh, it's a waste of space, but oh-so-yummy for debugging.
28 		i = i * 10 + *((*s)++) - '0';  in skip_atoi()
44 		*--end = '0' + (r - q * 10);  in put_dec_full4()
47 	*--end = '0' + r;  in put_dec_full4()
57  * (second call in the put_dec code, assuming n is all-ones).
64 	put_dec_full4(end, x - q * 10000);  in put_dec_helper4()
71  * Performs no 64-bit division and hence should be fast on 32-bit machines.
88 	p -= 4;  in put_dec()
92 	p -= 4;  in put_dec()
96 	p -= 4;  in put_dec()
100 	p -= 4;  in put_dec()
103 	p -= 4;  in put_dec()
130 			*--end = '0' + (num & 07);  in number()
134 			*--end = digits[num & 0xf] | locase;  in number()
150 #define WIDE	128		/* UTF-16 string */
159 		case '-':  in get_flags()
232 		*num = -(*num);  in get_sign()
233 		return '-';  in get_sign()
255 		 * If this is a high surrogate, and we're already at maxlen, we  in utf16s_utf8nlen()
282 	/* invalid: low surrogate instead of high */  in utf16_to_utf32()
291 	return (0x10000 - (0xd800 << 10) - 0xdc00) + (c0 << 10) + c1;  in utf16_to_utf32()
303 	/* The maximum space required is to print a 64-bit number in octal */  in vsnprintf()
315 	int precision;		/* min. # of digits for integers; max  in vsnprintf()  local
327 	 * size-1 array containing a structure. Our function parameter ap has  in vsnprintf()
349 			field_width = -field_width;  in vsnprintf()
356 		/* get the precision */  in vsnprintf()
357 		precision = -1;  in vsnprintf()
360 			precision = get_int(&fmt, &args);  in vsnprintf()
361 			if (precision >= 0)  in vsnprintf()
366 		qualifier = -1;  in vsnprintf()
371 				qualifier -= 'a'-'A';  in vsnprintf()
385 				precision = INT_MAX;  in vsnprintf()
389 				precision = len = 1;  in vsnprintf()
395 			if (precision < 0)  in vsnprintf()
396 				precision = INT_MAX;  in vsnprintf()
399 				s = precision < 6 ? "" : "(null)";  in vsnprintf()
403 				precision = len = utf16s_utf8nlen((const u16 *)s, precision);  in vsnprintf()
406 			precision = len = strnlen(s, precision);  in vsnprintf()
409 			/* integer number formats - set up the flags and "break" */  in vsnprintf()
415 			if (precision < 0)  in vsnprintf()
416 				precision = 2 * sizeof(void *);  in vsnprintf()
451 			--field_width;  in vsnprintf()
454 		len = tmp_end - s;  in vsnprintf()
455 		/* default precision is 1 */  in vsnprintf()
456 		if (precision < 0)  in vsnprintf()
457 			precision = 1;  in vsnprintf()
458 		/* precision is minimum number of digits to print */  in vsnprintf()
459 		if (precision < len)  in vsnprintf()
460 			precision = len;  in vsnprintf()
465 			 * precision.  in vsnprintf()
467 			if (base == 8 && precision == len)  in vsnprintf()
468 				++precision;  in vsnprintf()
472 			 * precision are 0.  in vsnprintf()
474 			if (base == 16 && precision > 0)  in vsnprintf()
475 				field_width -= 2;  in vsnprintf()
480 		 * For zero padding, increase the precision to fill the field  in vsnprintf()
483 		if ((flags & ZEROPAD) && field_width > precision)  in vsnprintf()
484 			precision = field_width;  in vsnprintf()
488 		field_width -= precision;  in vsnprintf()
491 			while (field_width-- > 0)  in vsnprintf()
501 		/* Zero padding and excess precision */  in vsnprintf()
502 		while (precision-- > len)  in vsnprintf()
508 			while (len-- > 0) {  in vsnprintf()
521 				len -= clen;  in vsnprintf()
530 				/* Set high bits of leading octet */  in vsnprintf()
533 				for (s8 += clen; clen; --clen, c32 >>= 6)  in vsnprintf()
534 					*s8-- = 0x80 | (c32 & 0x3f);  in vsnprintf()
539 			while (len-- > 0)  in vsnprintf()
543 		while (field_width-- > 0)  in vsnprintf()
550 		buf[min(pos, size-1)] = '\0';  in vsnprintf()