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26 lines
406 B
26 lines
406 B
#include <math.h>
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#include <float.h>
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#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
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long double nearbyintl(long double x)
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{
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return nearbyint(x);
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}
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#else
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#include <fenv.h>
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long double nearbyintl(long double x)
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{
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#ifdef FE_INEXACT
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#pragma STDC FENV_ACCESS ON
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int e;
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e = fetestexcept(FE_INEXACT);
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#endif
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x = rintl(x);
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#ifdef FE_INEXACT
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if (!e)
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feclearexcept(FE_INEXACT);
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#endif
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return x;
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}
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#endif
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