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From "Bob Wiegand (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQCPP-375) decaf::lang::Long::to{Hex,Binary,Octal}String problems
Date Mon, 06 Jun 2011 13:55:59 GMT
decaf::lang::Long::to{Hex,Binary,Octal}String problems
------------------------------------------------------

                 Key: AMQCPP-375
                 URL: https://issues.apache.org/jira/browse/AMQCPP-375
             Project: ActiveMQ C++ Client
          Issue Type: Bug
          Components: Decaf
    Affects Versions: 3.3.0
            Reporter: Bob Wiegand
            Assignee: Timothy Bish
            Priority: Trivial


decaf::lang::Long::to{Hex,Binary,Octal}String return the wrong result for numbers less than
-2^32 (on platforms with 64 bit long long): the returned string only represents the low 32
bits.
A separate problem causes decaf::lang::{Integer,Long}::toOctalString to return the wrong result
for negative numbers because there are not an even multiple of 3 bits.

This test program demonstrates the problems
$ cat test.cpp 

#include <iostream>

#include <decaf/lang/Integer.h>
#include <decaf/lang/Long.h>

using namespace std;
using namespace decaf::lang;



void testLong (long long value)
{
        cout << "testLong(" << dec << value << "LL)\n"
                << "\ndec:\t" << dec << value << "\ntoB10:\t" <<
Long::toString(value, 10)
                << "\nhex:\t" << hex << value << "\ntoHex:\t" <<
Long::toHexString(value)
                << "\noct:\t" << oct << value << "\ntoOct:\t" <<
Long::toOctalString(value)
                << "\noct:\t" << oct << value << "\ntoB8:\t" <<
Long::toString(value, 8)
                << "\nhex:\t" << hex << value << "\ntoBin:\t" <<
Long::toBinaryString(value)
                << "\n\n";
}


void testInteger (int value)
{
        cout << "testInteger(" << dec << value << ")\n"
                << "\ndec:\t" << dec << value << "\ntoB10:\t" <<
Integer::toString(value, 10)
                << "\nhex:\t" << hex << value << "\ntoHex:\t" <<
Integer::toHexString(value)
                << "\noct:\t" << oct << value << "\ntoOct:\t" <<
Integer::toOctalString(value)
                << "\noct:\t" << oct << value << "\ntoB8:\t" <<
Integer::toString(value, 8)
                << "\nhex:\t" << hex << value << "\ntoBin:\t" <<
Integer::toBinaryString(value)
                << "\n\n";
}



int main (int argc, char **argv)
{
        testLong(-1LL);
        testLong(-0xFF00000000LL);

        testInteger(-1);
        testInteger(0xDFFF0000);

        return 0;
}


$


$ ./a.out 
testLong(-1LL)

dec:    -1
toB10:  -1
hex:    ffffffffffffffff
toHex:  ffffffff
oct:    1777777777777777777777
toOct:  77777777777
oct:    1777777777777777777777
toB8:   -1
hex:    ffffffffffffffff
toBin:  11111111111111111111111111111111

testLong(-1095216660480LL)

dec:    -1095216660480
toB10:  -1095216660480
hex:    ffffff0100000000
toHex:  00000000
oct:    1777777760040000000000
toOct:  40000000000
oct:    1777777760040000000000
toB8:   -17740000000000
hex:    ffffff0100000000
toBin:  00000000000000000000000000000000

testInteger(-1)

dec:    -1
toB10:  -1
hex:    ffffffff
toHex:  ffffffff
oct:    37777777777
toOct:  77777777777
oct:    37777777777
toB8:   -1
hex:    ffffffff
toBin:  11111111111111111111111111111111

testInteger(-536936448)

dec:    -536936448
toB10:  -536936448
hex:    dfff0000
toHex:  dfff0000
oct:    33777600000
toOct:  73777600000
oct:    33777600000
toB8:   -4000200000
hex:    dfff0000
toBin:  11011111111111110000000000000000

$


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