project64/Source/Common/Platform.cpp

#include "Platform.h"
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>

#ifndef _WIN32
int _vscprintf(const char * format, va_list pargs)
{
    int retval;
    va_list argcopy;
    va_copy(argcopy, pargs);
    retval = vsnprintf(nullptr, 0, format, argcopy);
    va_end(argcopy);
    return retval;
}
#endif

#ifdef _MSC_VER
#include <float.h>

int fesetround(int RoundType)
{
    static const unsigned int msRound[4] = {_RC_NEAR, _RC_CHOP, _RC_UP, _RC_DOWN};
    int32_t res = _controlfp(msRound[RoundType], _MCW_RC);
    if (res == _RC_NEAR)
    {
        return FE_TONEAREST;
    }
    if (res == _RC_CHOP)
    {
        return FE_TOWARDZERO;
    }
    if (res == _RC_UP)
    {
        return FE_UPWARD;
    }
    if (res == _RC_DOWN)
    {
        return FE_DOWNWARD;
    }
    return FE_TONEAREST;
}
#endif