Difference between revisions of "cpp/numeric/fenv/feenv"
From cppreference.com
(summary) |
m (Use since= and until= params of {{dcl}} template.) |
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{{dcl begin}} | {{dcl begin}} | ||
{{dcl header | cfenv}} | {{dcl header | cfenv}} | ||
| − | {{dcl | | + | {{dcl | since=c++11 | num=1| |
int fegetenv( std::fenv_t* envp ) | int fegetenv( std::fenv_t* envp ) | ||
}} | }} | ||
| − | {{dcl | | + | {{dcl | since=c++11 | num=2| |
int fesetenv( const std::fenv_t* envp ); | int fesetenv( const std::fenv_t* envp ); | ||
}} | }} | ||
Revision as of 15:41, 1 July 2013
| Defined in header <cfenv>
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| int fegetenv( std::fenv_t* envp ) |
(1) | (since C++11) |
| 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
| (C++11) |
saves the environment, clears all status flags and ignores all future errors (function) |
| (C++11) |
restores the floating-point environment and raises the previously raised exceptions (function) |
| (C++11) |
default floating-point environment (macro constant) |
