root/src/system/libroot/posix/musl/math/rintl.c
#include "libm.h"

#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double rintl(long double x)
{
        return rint(x);
}
#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384

static const long double toint = 1/LDBL_EPSILON;

long double rintl(long double x)
{
        union ldshape u = {x};
        int e = u.i.se & 0x7fff;
        int s = u.i.se >> 15;
        long double y;

        if (e >= 0x3fff+LDBL_MANT_DIG-1)
                return x;
        if (s)
                y = x - toint + toint;
        else
                y = x + toint - toint;
        if (y == 0)
                return 0*x;
        return y;
}
#endif