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/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the mingw-w64 runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
#include <math.h>
#include <fenv.h>
long long llrintl (long double x)
{
long long retval = 0ll;
#if (defined(_AMD64_) && !defined(_ARM64EC_)) || (defined(__x86_64__) && !defined(__arm64ec__)) || \
defined(_X86_) || defined(__i386__)
__asm__ __volatile__ ("fistpll %0" : "=m" (retval) : "t" (x) : "st");
#else
int mode = fegetround();
if (mode == FE_DOWNWARD)
retval = (long long)floor(x);
else if (mode == FE_UPWARD)
retval = (long long)ceil(x);
else if (mode == FE_TOWARDZERO)
retval = x >= 0 ? (long long)floor(x) : (long long)ceil(x);
else {
// Break `x` into integral and fractional parts.
long double intg, frac;
frac = modfl(x, &intg);
frac = fabsl(frac);
// Convert the truncated integral part to an integer.
retval = intg;
if (frac < 0.5) {
// Round towards zero.
} else if (frac > 0.5) {
// Round towards infinities.
retval += signbit(x) ? -1 : 1;
} else {
// Round to the nearest even number.
retval += retval % 2;
}
}
#endif
return retval;
}
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