[Insight-developers] The pow function vs. SGI MIPSPro 7.3.1.3m

[Kent Williams]

I did an update to my Insight directory on an SGI platform today, and 
ran into some compiler errors. Specifically, when the pow() function is 
called I get errors of this form:

cc-1282 CC: ERROR File = 
[...]Insight/Testing/Code/Common/itkBoundingBoxTest.cxx, Line = 184
  More than one instance of overloaded function "pow" matches the 
argument list.

            Function symbol function "pow(double, double)" is ambiguous by
                      inheritance.
            Function symbol function "pow(float, float)" is ambiguous by
                      inheritance.
            Function symbol function "pow(long double, long double)" is
                      ambiguous by inheritance.
            Function symbol function "pow(float, int)" is ambiguous by
                      inheritance.
            Function symbol function "pow(double, int)" is ambiguous by
                      inheritance.
            Function symbol function "pow(long double, int)" is ambiguous by
                      inheritance.
            The argument types are:  (int, unsigned int).
        if((*it)[i] != pow(-1,j/(int(pow(2,i)))))

The compile flags we're using:
-n32 -g -DUDEBUG -G0 -multigot  -xansi -LANG:std 
-LANG:ansi-for-init-scope=ON -woff  
15,84,1110,1209,1424,1468,3102,3210,3439  -LANG:std -woff 
15,84,1110,1209,1424,1468,3102,3210,3439  -no_auto_include -ptused 
-no_prelink 

Now, I see all the SGI compiles were, as of the last roll-up, not 
showing any of the errors I'm seeing. I've done little fixes to get ITK 
built, but ultimately, shouldn't we be using the VXL math functions 
instead of math.h math functions?

What compiler flags are others using when they build?