libcruft-util/cruft/util/debug/fpe_win32.cpp

#include "./fpe.hpp"

#undef __STRICT_ANSI__

#include <float.h>

//#pragma fenv_access (on)


using cruft::debug::fpe::scoped_reset;


///////////////////////////////////////////////////////////////////////////////
void
cruft::debug::fpe::enable (void)
{
    unsigned int current;
    (void)current;
    _controlfp_s (&current, _MCW_EM, _EM_INVALID | _EM_ZERODIVIDE);
}


//-----------------------------------------------------------------------------
void
cruft::debug::fpe::disable (void)
{
    unsigned int current;
    (void)current;
    _controlfp_s (&current, 0, _EM_INVALID | _EM_ZERODIVIDE);
}


//-----------------------------------------------------------------------------
bool cruft::debug::fpe::value (void)
{
    unsigned current;
    _controlfp_s (&current, _EM_INVALID, 0);
    return current;
}


//-----------------------------------------------------------------------------
bool cruft::debug::fpe::value (bool val)
{
    if (val)
        enable ();
    else
        disable ();
    return val;
}


///////////////////////////////////////////////////////////////////////////////
scoped_reset::scoped_reset ()
    : m_prev (value ())
{ }


//-----------------------------------------------------------------------------
scoped_reset::scoped_reset (bool _value)
    : scoped_reset ()
{
    value (_value);
}


//-----------------------------------------------------------------------------
scoped_reset::~scoped_reset ()
{
    value (m_prev);
}