FE_DFL_ENV
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                    | Defined in header <<fenv.h>>
  | ||
| #define FE_DFL_ENV  /*implementation defined*/ | (since C99) | |
The macro constant FE_DFL_ENV expands to an expression of type const fenv_t*, which points to a full copy of the default floating-point environment, that is, the environment as loaded at program startup.
Additional macros that begin with FE_ followed by uppercase letters, and have the type const fenv_t*, may be supported by an implementation.
[edit] Example
| This section is incomplete Reason: no example | 
[edit] See also
| (C99) | saves or restores the current floating point environment (function) | 
| (C99) | restores the floating-point environment and raises the previously raise exceptions (function) |