Old snapshot `BigIntegerLibrary-2005.01.06'; see the ChangeLog file.

[bigint/bigint.git] / BigUnsignedInABase.cc

diff --git a/BigUnsignedInABase.cc b/BigUnsignedInABase.cc
index b668c58..a450cf0 100644 (file)
--- a/BigUnsignedInABase.cc
+++ b/BigUnsignedInABase.cc
@@ -3,6 +3,15 @@
 * http://mysite.verizon.net/mccutchen/bigint/
 */
 
+/*
+* Milan Tomic had trouble compiling this file on Microsoft
+* Visual C++ 6 because, in the libraries that come with
+* Visual C++ 6, the `std::string::push_back' method apparently
+* does not exist.  To get around the problem, I rewrote
+* `BigUnsignedInABase::operator std::string' (at the bottom
+* of this file) so it doesn't use `push_back'.
+*/
+
 #include "BigUnsignedInABase.hh"
 
 namespace {
@@ -93,16 +102,16 @@ BigUnsignedInABase::operator std::string() const {
                throw "BigUnsignedInABase ==> std::string: The default string conversion routines use the symbol set 0-9, A-Z and therefore support only up to base 36.  You tried a conversion with a base over 36; write your own string conversion routine.";
        if (len == 0)
                return std::string("0");
-       std::string s;
-       s.reserve(len);
+       char *s = new char[len + 1];
+       s[len] = '\0';
        Index digitNum, symbolNumInString;
        for (symbolNumInString = 0; symbolNumInString < len; symbolNumInString++) {
                digitNum = len - 1 - symbolNumInString;
                Digit theDigit = blk[digitNum];
                if (theDigit < 10)
-                       s.push_back(char('0' + theDigit));
+                       s[symbolNumInString] = char('0' + theDigit);
                else
-                       s.push_back(char('A' + theDigit - 10));
+                       s[symbolNumInString] = char('A' + theDigit - 10);
        }
-       return s;
+       return std::string(s);
 }