FreeCalypso > hg > freecalypso-citrine
annotate lldbg/doprnt.c @ 46:38cf7fa65976
sprintf/float.c: rounding corner case bug
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 29 Sep 2017 03:23:01 +0000 |
parents | 75a11d740a02 |
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rev | line source |
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0
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1 /* the guts of printf - this implementation came from 4.3BSD-Tahoe */ |
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2 |
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3 #include <sys/types.h> |
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4 #include <ctype.h> |
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5 #include <stdarg.h> |
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6 |
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7 extern void lldbg_putchar(); |
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8 #define PUTC lldbg_putchar |
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9 |
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10 #define ARG() \ |
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11 _ulong = flags&LONGINT ? va_arg(argp, long) : va_arg(argp, int); |
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12 |
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13 #define BUF 12 |
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14 |
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15 #define todigit(c) ((c) - '0') |
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16 #define tochar(n) ((n) + '0') |
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17 |
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18 #define LONGINT 0x01 /* long integer */ |
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19 #define LONGDBL 0x02 /* long double; unimplemented */ |
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20 #define SHORTINT 0x04 /* short integer */ |
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21 #define ALT 0x08 /* alternate form */ |
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22 #define LADJUST 0x10 /* left adjustment */ |
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23 #define ZEROPAD 0x20 /* zero (as opposed to blank) pad */ |
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24 #define HEXPREFIX 0x40 /* add 0x or 0X prefix */ |
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25 |
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26 lldbg_doprnt(fmt0, argp, outfunc, outfunc_param) |
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27 u_char *fmt0; |
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28 va_list argp; |
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29 void (*outfunc)(); |
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30 void *outfunc_param; |
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31 { |
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32 register u_char *fmt; /* format string */ |
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33 register int ch; /* character from fmt */ |
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34 register int cnt; /* return value accumulator */ |
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35 register int n; /* random handy integer */ |
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36 register char *t; /* buffer pointer */ |
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37 u_long _ulong; /* integer arguments %[diouxX] */ |
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38 int base; /* base for [diouxX] conversion */ |
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39 int dprec; /* decimal precision in [diouxX] */ |
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40 int fieldsz; /* field size expanded by sign, etc */ |
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41 int flags; /* flags as above */ |
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42 int prec; /* precision from format (%.3d), or -1 */ |
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43 int realsz; /* field size expanded by decimal precision */ |
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44 int size; /* size of converted field or string */ |
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45 int width; /* width from format (%8d), or 0 */ |
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46 char sign; /* sign prefix (' ', '+', '-', or \0) */ |
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47 char softsign; /* temporary negative sign for floats */ |
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48 char *digs; /* digits for [diouxX] conversion */ |
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49 char buf[BUF]; /* space for %c, %[diouxX], %[eEfgG] */ |
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50 |
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51 fmt = fmt0; |
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52 digs = "0123456789abcdef"; |
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53 for (cnt = 0;; ++fmt) { |
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54 for (; (ch = *fmt) && ch != '%'; ++cnt, ++fmt) |
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55 PUTC(ch); |
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56 if (!ch) |
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57 return (cnt); |
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58 |
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59 flags = 0; dprec = 0; width = 0; |
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60 prec = -1; |
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61 sign = '\0'; |
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62 |
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63 rflag: switch (*++fmt) { |
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64 case ' ': |
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65 /* |
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66 * ``If the space and + flags both appear, the space |
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67 * flag will be ignored.'' |
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68 * -- ANSI X3J11 |
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69 */ |
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70 if (!sign) |
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71 sign = ' '; |
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72 goto rflag; |
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73 case '#': |
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74 flags |= ALT; |
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75 goto rflag; |
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76 case '*': |
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77 /* |
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78 * ``A negative field width argument is taken as a |
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79 * - flag followed by a positive field width.'' |
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80 * -- ANSI X3J11 |
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81 * They don't exclude field widths read from args. |
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82 */ |
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83 if ((width = va_arg(argp, int)) >= 0) |
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84 goto rflag; |
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85 width = -width; |
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86 /* FALLTHROUGH */ |
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87 case '-': |
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88 flags |= LADJUST; |
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89 goto rflag; |
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90 case '+': |
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91 sign = '+'; |
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92 goto rflag; |
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93 case '.': |
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94 if (*++fmt == '*') |
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95 n = va_arg(argp, int); |
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96 else { |
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97 n = 0; |
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98 while (isascii(*fmt) && isdigit(*fmt)) |
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99 n = 10 * n + todigit(*fmt++); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
100 --fmt; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
101 } |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
102 prec = n < 0 ? -1 : n; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
103 goto rflag; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
104 case '0': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
105 /* |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
106 * ``Note that 0 is taken as a flag, not as the |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
107 * beginning of a field width.'' |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
108 * -- ANSI X3J11 |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
109 */ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
110 flags |= ZEROPAD; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
111 goto rflag; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
112 case '1': case '2': case '3': case '4': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
113 case '5': case '6': case '7': case '8': case '9': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
114 n = 0; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 do { |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 n = 10 * n + todigit(*fmt); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 } while (isascii(*++fmt) && isdigit(*fmt)); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 width = n; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
119 --fmt; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
120 goto rflag; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 case 'L': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 flags |= LONGDBL; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
123 goto rflag; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
124 case 'h': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
125 flags |= SHORTINT; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
126 goto rflag; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
127 case 'l': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
128 flags |= LONGINT; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
129 goto rflag; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
130 case 'c': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
131 *(t = buf) = va_arg(argp, int); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
132 size = 1; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
133 sign = '\0'; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 goto pforw; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
135 case 'D': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
136 flags |= LONGINT; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 /*FALLTHROUGH*/ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 case 'd': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 case 'i': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
140 ARG(); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 if ((long)_ulong < 0) { |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 _ulong = -_ulong; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 sign = '-'; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 } |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 base = 10; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
146 goto number; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 case 'n': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
148 if (flags & LONGINT) |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
149 *va_arg(argp, long *) = cnt; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
150 else if (flags & SHORTINT) |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
151 *va_arg(argp, short *) = cnt; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
152 else |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
153 *va_arg(argp, int *) = cnt; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 break; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
155 case 'O': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
156 flags |= LONGINT; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
157 /*FALLTHROUGH*/ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
158 case 'o': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 ARG(); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 base = 8; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 goto nosign; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 case 'p': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 /* |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 * ``The argument shall be a pointer to void. The |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
165 * value of the pointer is converted to a sequence |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 * of printable characters, in an implementation- |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 * defined manner.'' |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 * -- ANSI X3J11 |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 */ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 /* NOSTRICT */ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 _ulong = (u_long)va_arg(argp, void *); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
172 base = 16; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 goto nosign; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 case 's': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
175 if (!(t = va_arg(argp, char *))) |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
176 t = "(null)"; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
177 if (prec >= 0) { |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 /* |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
179 * can't use strlen; can only look for the |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 * NUL in the first `prec' characters, and |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 * strlen() will go further. |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 */ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 char *p; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
185 for (p = t, size = 0; size < prec; p++, size++) |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 if (*p == '\0') |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 break; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 } else |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 size = strlen(t); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
190 sign = '\0'; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 goto pforw; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
192 case 'U': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
193 flags |= LONGINT; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
194 /*FALLTHROUGH*/ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
195 case 'u': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
196 ARG(); |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
197 base = 10; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
198 goto nosign; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
199 case 'X': |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
200 digs = "0123456789ABCDEF"; |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
201 /* FALLTHROUGH */ |
75a11d740a02
initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
202 case 'x': |
75a11d740a02
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203 ARG(); |
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204 base = 16; |
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205 /* leading 0x/X only if non-zero */ |
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206 if (flags & ALT && _ulong != 0) |
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207 flags |= HEXPREFIX; |
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208 |
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209 /* unsigned conversions */ |
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210 nosign: sign = '\0'; |
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211 /* |
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212 * ``... diouXx conversions ... if a precision is |
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213 * specified, the 0 flag will be ignored.'' |
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214 * -- ANSI X3J11 |
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215 */ |
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216 number: if ((dprec = prec) >= 0) |
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217 flags &= ~ZEROPAD; |
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218 |
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219 /* |
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220 * ``The result of converting a zero value with an |
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221 * explicit precision of zero is no characters.'' |
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222 * -- ANSI X3J11 |
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223 */ |
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224 t = buf + BUF; |
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225 if (_ulong != 0 || prec != 0) { |
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226 do { |
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227 *--t = digs[_ulong % base]; |
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228 _ulong /= base; |
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229 } while (_ulong); |
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230 digs = "0123456789abcdef"; |
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231 if (flags & ALT && base == 8 && *t != '0') |
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232 *--t = '0'; /* octal leading 0 */ |
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233 } |
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234 size = buf + BUF - t; |
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235 |
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236 pforw: |
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237 /* |
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238 * All reasonable formats wind up here. At this point, |
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239 * `t' points to a string which (if not flags&LADJUST) |
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240 * should be padded out to `width' places. If |
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241 * flags&ZEROPAD, it should first be prefixed by any |
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242 * sign or other prefix; otherwise, it should be blank |
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243 * padded before the prefix is emitted. After any |
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244 * left-hand padding and prefixing, emit zeroes |
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245 * required by a decimal [diouxX] precision, then print |
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246 * the string proper, then emit zeroes required by any |
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247 * leftover floating precision; finally, if LADJUST, |
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248 * pad with blanks. |
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249 */ |
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250 |
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251 /* |
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252 * compute actual size, so we know how much to pad |
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253 * fieldsz excludes decimal prec; realsz includes it |
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254 */ |
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255 fieldsz = size; |
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256 if (sign) |
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257 fieldsz++; |
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258 if (flags & HEXPREFIX) |
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259 fieldsz += 2; |
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260 realsz = dprec > fieldsz ? dprec : fieldsz; |
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261 |
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262 /* right-adjusting blank padding */ |
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263 if ((flags & (LADJUST|ZEROPAD)) == 0 && width) |
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264 for (n = realsz; n < width; n++) |
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265 PUTC(' '); |
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266 /* prefix */ |
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267 if (sign) |
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268 PUTC(sign); |
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269 if (flags & HEXPREFIX) { |
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270 PUTC('0'); |
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271 PUTC((char)*fmt); |
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272 } |
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273 /* right-adjusting zero padding */ |
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274 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) |
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275 for (n = realsz; n < width; n++) |
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276 PUTC('0'); |
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277 /* leading zeroes from decimal precision */ |
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278 for (n = fieldsz; n < dprec; n++) |
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279 PUTC('0'); |
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280 |
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281 for (n = size; --n >= 0; ) |
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282 PUTC(*t++); |
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283 /* left-adjusting padding (always blank) */ |
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284 if (flags & LADJUST) |
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285 for (n = realsz; n < width; n++) |
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286 PUTC(' '); |
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287 /* finally, adjust cnt */ |
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288 cnt += width > realsz ? width : realsz; |
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289 break; |
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290 case '\0': /* "%?" prints ?, unless ? is NULL */ |
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291 return (cnt); |
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292 default: |
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293 PUTC((char)*fmt); |
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294 cnt++; |
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295 } |
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296 } |
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297 /* NOTREACHED */ |
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298 } |