gcc升级后遇到的问题，关于overload（已解决）

3rd0mit

我把原来的etch升级为sid后，gcc也跟着升级了。
原来编译好好的程序出了如下错误:
nucl_RPA.cpp: In member function 'void nucl_RPA::getspectrum()':
nucl_RPA.cpp:390: error: call of overloaded 'abs(int&)' is ambiguous
/usr/include/c++/4.3/cmath:99: note: candidates are: double std::abs(double)
/usr/include/c++/4.3/cmath:103: note:                 float std::abs(float)
/usr/include/c++/4.3/cmath:107: note:                 long double std::abs(long double)
应该怎么处理呢？

390行的原文是：
390 :    if(kl_p_max<abs(spm_p.at(i).kl))
391：            kl_p_max=abs(spm_p.at(i).kl);
先谢过了！

[ 本帖最后由 3rd0mit 于 2009-9-10 15:15 编辑 ]

3rd0mit

已经解决了，在：Sun Studio 12 Update 1:C++FAQz中站提到：

Until fairly recently, the only version of abs available on Solaris was the traditional int version. If you invoked abs with any numeric type, the value was implicitly converted to type int, and the int version of abs was called, assuming that you included <stdlib.h> or <cstdlib>.

大意就是关于整数的abs函数的引用在<stdlib.h> or <cstdlib>.中
我include<cstdlib>后，编译正常。