/
bignum.cpp
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/
bignum.cpp
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/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2010 Wayne Meissner
* Copyright (C) 2010 Tim Felgentreff
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the CPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the CPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
#include "jruby.h"
#include "ruby.h"
#include "JLocalEnv.h"
#include <math.h>
using namespace jruby;
extern "C" int
jruby_big_bytes_used(VALUE obj)
{
return NUM2INT(callMethod(obj, "size", 0));
}
extern "C" VALUE
jruby_big_sign(VALUE obj)
{
return callMethod(obj, ">", 1, INT2NUM(0));
}
extern "C" long long
rb_big2ll(VALUE obj)
{
JLocalEnv env;
jvalue params[1];
params[0].l = valueToObject(env, obj);
jlong result = env->CallStaticLongMethodA(RubyNumeric_class, RubyNumeric_num2long_method, params);
checkExceptions(env);
return (long long) result;
}
extern "C" long
rb_big2long(VALUE obj)
{
return (long) rb_big2ll(obj);
}
extern "C" unsigned long
rb_big2ulong(VALUE obj)
{
if (TYPE(obj) == T_BIGNUM) {
JLocalEnv env;
jlong result = env->CallStaticLongMethod(RubyBignum_class, RubyBignum_big2ulong_method, valueToObject(env, obj));
checkExceptions(env);
return (unsigned long) result;
} else {
return (unsigned long) rb_big2ll(obj);
}
}
extern "C" double
rb_big2dbl(VALUE obj)
{
JLocalEnv env;
jvalue params[1];
params[0].l = valueToObject(env, obj);
jdouble result = env->CallStaticDoubleMethodA(RubyBignum_class, RubyBignum_big2dbl_method, params);
checkExceptions(env);
if (unlikely(isnan(result))) {
return (signbit(result)) ? -INFINITY : INFINITY;
} else {
return result;
}
}
extern "C" VALUE
rb_big2str(VALUE obj, int radix)
{
return callMethod(obj, "to_s", 1, INT2FIX(radix));
}