diff options
Diffstat (limited to 'vendor/gmp-6.3.0/cxx/osfuns.cc')
-rw-r--r-- | vendor/gmp-6.3.0/cxx/osfuns.cc | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/cxx/osfuns.cc b/vendor/gmp-6.3.0/cxx/osfuns.cc new file mode 100644 index 0000000..81590a8 --- /dev/null +++ b/vendor/gmp-6.3.0/cxx/osfuns.cc @@ -0,0 +1,123 @@ +/* Support for operator<< routines. + + THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST + CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN + FUTURE GNU MP RELEASES. + +Copyright 2001 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + +or + + * the GNU General Public License as published by the Free Software + Foundation; either version 2 of the License, or (at your option) any + later version. + +or both in parallel, as here. + +The GNU MP Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received copies of the GNU General Public License and the +GNU Lesser General Public License along with the GNU MP Library. If not, +see https://www.gnu.org/licenses/. */ + +#include <iostream> +#include <stdarg.h> /* for va_list and hence doprnt_funs_t */ +#include <string.h> + +#include "gmp-impl.h" + +using namespace std; + + +/* Don't need "format" for operator<< routines, just "memory" and "reps". + Omitting gmp_asprintf_format lets us avoid dragging vsnprintf into the + link. __gmp_asprintf_final will be called directly and doesn't need to + be in the struct. */ + +const struct doprnt_funs_t __gmp_asprintf_funs_noformat = { + NULL, + (doprnt_memory_t) __gmp_asprintf_memory, + (doprnt_reps_t) __gmp_asprintf_reps, + NULL +}; + + +void +__gmp_doprnt_params_from_ios (struct doprnt_params_t *p, ios &o) +{ + if ((o.flags() & ios::basefield) == ios::hex) + { + p->expfmt = "@%c%02d"; + p->base = (o.flags() & ios::uppercase ? -16 : 16); + } + else + { + p->expfmt = (o.flags() & ios::uppercase ? "E%c%02d" : "e%c%02d"); + if ((o.flags() & ios::basefield) == ios::oct) + p->base = 8; + else + p->base = 10; + } + + /* "general" if none or more than one bit set */ + if ((o.flags() & ios::floatfield) == ios::fixed) + p->conv = DOPRNT_CONV_FIXED; + else if ((o.flags() & ios::floatfield) == ios::scientific) + p->conv = DOPRNT_CONV_SCIENTIFIC; + else + p->conv = DOPRNT_CONV_GENERAL; + + p->exptimes4 = 0; + + p->fill = o.fill(); + + /* "right" if more than one bit set */ + if ((o.flags() & ios::adjustfield) == ios::left) + p->justify = DOPRNT_JUSTIFY_LEFT; + else if ((o.flags() & ios::adjustfield) == ios::internal) + p->justify = DOPRNT_JUSTIFY_INTERNAL; + else + p->justify = DOPRNT_JUSTIFY_RIGHT; + + /* ios::fixed allows prec==0, others take 0 as the default 6. + Don't allow negatives (they do bad things to __gmp_doprnt_float_cxx). */ + p->prec = MAX (0, o.precision()); + if (p->prec == 0 && p->conv != DOPRNT_CONV_FIXED) + p->prec = 6; + + /* for hex showbase is always, for octal only non-zero */ + if (o.flags() & ios::showbase) + p->showbase = ((o.flags() & ios::basefield) == ios::hex + ? DOPRNT_SHOWBASE_YES : DOPRNT_SHOWBASE_NONZERO); + else + p->showbase = DOPRNT_SHOWBASE_NO; + + p->showpoint = ((o.flags() & ios::showpoint) != 0); + + /* in fixed and scientific always show trailing zeros, in general format + show them if showpoint is set (or so it seems) */ + if ((o.flags() & ios::floatfield) == ios::fixed + || (o.flags() & ios::floatfield) == ios::scientific) + p->showtrailing = 1; + else + p->showtrailing = p->showpoint; + + p->sign = (o.flags() & ios::showpos ? '+' : '\0'); + + p->width = o.width(); + + /* reset on each output */ + o.width (0); +} |