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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:  <math.h>
 
  Context:  _matherr, _matherrl
 
  Structure:
 
  struct _exception
  {
      int type;            // Exception type
      char *name;          // Name of function where error occurred
      double arg1;         // First argument to function
      double arg2;         // Second argument (if any) to function
      double retval;       // Value to be returned by function
  };
 
  struct _exceptionl
  {
      int type;            // Exception type
      char *name;          // Name of function where error occurred
      long double arg1;    // First argument to function
      long double arg2;    // Second argument (if any) to function
      long double retval;  // Value to be returned by function
  };
                                    -♦-