std:: fegetenv, std:: fesetenv
From cppreference.net
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Defined in header
<cfenv>
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||
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int
fegetenv
(
std::
fenv_t
*
envp
)
|
(1) | (since C++11) |
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int
fesetenv
(
const
std::
fenv_t
*
envp
)
;
|
(2) | (since C++11) |
Manages the status of the floating-point environment.
1)
Attempts to store the status of the floating-point environment in the object pointed to by
envp
.
2)
Attempts to establish the floating-point environment from the object pointed to by
envp
. The value of that object must be previously obtained by a call to
std::feholdexcept
or
std::fegetenv
or be a floating-point macro constant. If any of the floating-point status flags are set in
envp
, they become set in the environment (and are then testable with
std::fetestexcept
), but the corresponding floating-point exceptions are not raised (execution continues uninterrupted)
Parameters
| envp | - | pointer to the object of type std:: fenv_t which holds the status of the floating-point environment |
Return value
0 on success, non-zero otherwise.
See also
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(C++11)
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saves the environment, clears all status flags and ignores all future errors
(function) |
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(C++11)
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restores the floating-point environment and raises the previously raised exceptions
(function) |
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(C++11)
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default floating-point environment
(macro constant) |
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C documentation
for
fegetenv
,
fesetenv
|
|