fenv_t, fexecpt_t

Data types for querying and manipulating the floating-point environment.

  #include <fenv.h>
  
   typedef /* ... */ fenv_t;
  
    typedef /* ... */ fexcept_t;    

The fenv_t data type represents the target system's floating point environment.

The fexcept_t data type represents the status flags in the environment