Struggling to Compile MPSolve? A Quick Fix for macOS Users

Are you encountering errors while compiling the MPSolve library on your Mac? You're not alone. This open-source tool, essential for approximating polynomial roots, sometimes presents compilation challenges. Let's dive into the problem and provide a practical solution to get you up and running.

The MPSolve Compilation Conundrum: Why is it Failing?

The core issue lies in a conflict between macros defined in MPSolve's types.h header file and functions within the standard C++ library's cmath. Specifically, the isnan() and isinf() macros clash, causing the compilation process to grind to a halt; this issue appears to be related to how these macros are defined on macOS.

• Macro Conflicts: The isnan and isinf macros in types.h collide with functions of the same name in cmath.
• macOS Specific: This problem seems to be more prevalent on macOS systems.

The "Comment-Out" Solution: A Step-by-Step Guide

Fortunately, a simple workaround exists. By commenting out the problematic macro definitions within the types.h file, you can bypass the conflict and successfully compile the MPSolve library. Here's how:

1. Locate types.h: Navigate to the mpsolve-3.2.2/include/mps/ directory of your extracted MPSolve source code.

2. Open types.h: Open types.h in a text editor.

3. Comment Out Macros: Find the sections defining the isnan and isinf macros and enclose them in comment blocks. Your modified code should look like the example below (note the /* and */comment delimiters):

   #include <math.h>
   /*conlfict with std::isnan and std::isinf
   #ifndef isnan
   # define isnan(x) \
   (sizeof(x) == sizeof(long double)? isnan_ld (x) \
   : sizeof(x) == sizeof(double)? isnan_d (x) \
   : isnan_f (x))
   static inline int isnan_f (float x)
   {
   return x!= x;
   }
   static inline int isnan_d (double x)
   {
   return x!= x;
   }
   static inline int isnan_ld (long double x)
   {
   return x!= x;
   }
   #endif
   #ifndef isinf
   # define isinf(x) \
   (sizeof(x) == sizeof(long double)? isinf_ld (x) \
   : sizeof(x) == sizeof(double)? isinf_d (x) \
   : isinf_f (x))
   static inline int isinf_f (float x)
   {
   return!isnan (x) && isnan (x - x);
   }
   static inline int isinf_d (double x)
   {
   return!isnan (x) && isnan (x - x);
   }
   static inline int isinf_ld (long double x)
   {
   return!isnan (x) && isnan (x - x);
   }
   #endif
   */
   

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4. Save the File: Save the modified types.h file.

5. Recompile: Now, retry the compilation process. MPSolve should now compile successfully!

Why This Works

By commenting out these macro definitions, you're telling the compiler to use the standard isnan and isinf functions provided by the C++ library instead of the custom macros defined in types.h. This resolves the naming conflict and allows the compilation to proceed without errors.

Mastering Polynomial Root Approximation with MPSolve

With this simple fix, you'll be able to compile and use MPSolve, unlocking its powerful capabilities for approximating polynomial roots. By resolving this compilation error, you are now able to delve deeper into its capabilities and begin your journey towards polynomial root-finding mastery!

Long-Tail Keywords Integrated:

• MPSolve compilation error macOS
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• MPSolve polynomial roots library