#pragma once

#ifdef _MSC_VER

class fpu_control
{
	unsigned old_val;
	unsigned mask;
public:
	inline fpu_control(unsigned p_mask,unsigned p_val)
	{
		mask = p_mask;
		_controlfp_s(&old_val,p_val,mask);
	}
	inline ~fpu_control()
	{
		unsigned dummy;
		_controlfp_s(&dummy,old_val,mask);
	}
};

class fpu_control_roundnearest : private fpu_control
{
public:
	fpu_control_roundnearest() : fpu_control(_MCW_RC,_RC_NEAR) {}
};

class fpu_control_flushdenormal : private fpu_control
{
public:
	fpu_control_flushdenormal() : fpu_control(_MCW_DN,_DN_FLUSH) {}
};

class fpu_control_default : private fpu_control
{
public:
	fpu_control_default() : fpu_control(_MCW_DN|_MCW_RC,_DN_FLUSH|_RC_NEAR) {}
};

#ifdef _M_IX86
class sse_control {
public:
	sse_control(unsigned p_mask,unsigned p_val) : m_mask(p_mask) {
		__control87_2(p_val,p_mask,NULL,&m_oldval);
	}
	~sse_control() {
		__control87_2(m_oldval,m_mask,NULL,&m_oldval);
	}
private:
	unsigned m_mask,m_oldval;
};
class sse_control_flushdenormal : private sse_control {
public:
	sse_control_flushdenormal() : sse_control(_MCW_DN,_DN_FLUSH) {}
};
#endif

#endif