1 /* Support for operator<< routines.
3 THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST
4 CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
5 FUTURE GNU MP RELEASES.
7 Copyright 2001 Free Software Foundation, Inc.
9 This file is part of the GNU MP Library.
11 The GNU MP Library is free software; you can redistribute it and/or modify
12 it under the terms of either:
14 * the GNU Lesser General Public License as published by the Free
15 Software Foundation; either version 3 of the License, or (at your
16 option) any later version.
20 * the GNU General Public License as published by the Free Software
21 Foundation; either version 2 of the License, or (at your option) any
24 or both in parallel, as here.
26 The GNU MP Library is distributed in the hope that it will be useful, but
27 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
28 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
31 You should have received copies of the GNU General Public License and the
32 GNU Lesser General Public License along with the GNU MP Library. If not,
33 see https://www.gnu.org/licenses/. */
36 #include <stdarg.h> /* for va_list and hence doprnt_funs_t */
45 /* Don't need "format" for operator<< routines, just "memory" and "reps".
46 Omitting gmp_asprintf_format lets us avoid dragging vsnprintf into the
47 link. __gmp_asprintf_final will be called directly and doesn't need to
50 const struct doprnt_funs_t __gmp_asprintf_funs_noformat = {
52 (doprnt_memory_t) __gmp_asprintf_memory,
53 (doprnt_reps_t) __gmp_asprintf_reps,
59 __gmp_doprnt_params_from_ios (struct doprnt_params_t *p, ios &o)
61 if ((o.flags() & ios::basefield) == ios::hex)
63 p->expfmt = "@%c%02d";
64 p->base = (o.flags() & ios::uppercase ? -16 : 16);
68 p->expfmt = (o.flags() & ios::uppercase ? "E%c%02d" : "e%c%02d");
69 if ((o.flags() & ios::basefield) == ios::oct)
75 /* "general" if none or more than one bit set */
76 if ((o.flags() & ios::floatfield) == ios::fixed)
77 p->conv = DOPRNT_CONV_FIXED;
78 else if ((o.flags() & ios::floatfield) == ios::scientific)
79 p->conv = DOPRNT_CONV_SCIENTIFIC;
81 p->conv = DOPRNT_CONV_GENERAL;
87 /* "right" if more than one bit set */
88 if ((o.flags() & ios::adjustfield) == ios::left)
89 p->justify = DOPRNT_JUSTIFY_LEFT;
90 else if ((o.flags() & ios::adjustfield) == ios::internal)
91 p->justify = DOPRNT_JUSTIFY_INTERNAL;
93 p->justify = DOPRNT_JUSTIFY_RIGHT;
95 /* ios::fixed allows prec==0, others take 0 as the default 6.
96 Don't allow negatives (they do bad things to __gmp_doprnt_float_cxx). */
97 p->prec = MAX (0, o.precision());
98 if (p->prec == 0 && p->conv != DOPRNT_CONV_FIXED)
101 /* for hex showbase is always, for octal only non-zero */
102 if (o.flags() & ios::showbase)
103 p->showbase = ((o.flags() & ios::basefield) == ios::hex
104 ? DOPRNT_SHOWBASE_YES : DOPRNT_SHOWBASE_NONZERO);
106 p->showbase = DOPRNT_SHOWBASE_NO;
108 p->showpoint = ((o.flags() & ios::showpoint) != 0);
110 /* in fixed and scientific always show trailing zeros, in general format
111 show them if showpoint is set (or so it seems) */
112 if ((o.flags() & ios::floatfield) == ios::fixed
113 || (o.flags() & ios::floatfield) == ios::scientific)
116 p->showtrailing = p->showpoint;
118 p->sign = (o.flags() & ios::showpos ? '+' : '\0');
120 p->width = o.width();
122 /* reset on each output */