Handling Errors Outside of the Complex Mathematics Library

There are some cases where member functions of the Complex Mathematics Library call functions in the math library. These calls can cause underflow and overflow conditions that are handled by the matherr() function that is declared in the math.h header file. For example, the overflow conditions that are caused by the following calls are handled by matherr():

• exp(complex(DBL_MAX, DBL_MAX))
• pow(complex(DBL_MAX, DBL_MAX), INT_MAX)
• norm(complex(DBL_MAX, DBL_MAX))

DBL_MAX is the maximum valid double value, and is defined in float.h. INT_MAX is the maximum int value, and is defined in limits.h.

If you do not want the default error-handling defined by matherr(), you should define your own version of matherr().