The FPEDisabler class puts Floating-Point Exception (FPE) trapping on hold during its lifetime, restoring the FE environment upon destruction. More...

#include <fpe_disabler.h>

Public Member Functions
	FPEDisabler ()

	~FPEDisabler ()

Public Attributes
std::fenv_t	old_env

Detailed Description

The FPEDisabler class puts Floating-Point Exception (FPE) trapping on hold during its lifetime, restoring the FE environment upon destruction.

This allows code to ignore known/expected FPE sources, e.g. to work around a bug in HDF5 1.14.3 or to test for errors in a more sophisticated way and throw a C++ exception instead.

FE environment changes should not be made during the lifetime of this object, as they will not be preserved when the destructor restores the original environment.

Author: Roy Stogner

Date: 2024

Temporarily disables Floating-Point Exception (FPE) trapping

Definition at line 49 of file fpe_disabler.h.

Constructor & Destructor Documentation

◆ FPEDisabler()

libMesh::FPEDisabler::FPEDisabler ( )

inline

Definition at line 51 of file fpe_disabler.h.

  {
    std::feholdexcept(&old_env);
  }

References old_env.

◆ ~FPEDisabler()

libMesh::FPEDisabler::~FPEDisabler ( )

inline

Definition at line 56 of file fpe_disabler.h.

  {
    std::fesetenv(&old_env);
  }

References old_env.

Member Data Documentation

◆ old_env

std::fenv_t libMesh::FPEDisabler::old_env

Definition at line 61 of file fpe_disabler.h.

Referenced by FPEDisabler(), and ~FPEDisabler().

The documentation for this struct was generated from the following file:

include/utils/fpe_disabler.h