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# FE_DFL_ENV

From cppreference.com
< c‎ | numeric‎ | fenv

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

fegetenv fesetenv (C99) | saves or restores the current floating point environment (function) [edit]
feupdateenv (C99) | restores the floating-point environment and raises the previously raise exceptions (function) [edit]
C++ documentation for FE_DFL_ENV

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- Todo no example