src/math/nearbyintf.c

570af302Sopenharmony_ci#include <fenv.h>
570af302Sopenharmony_ci#include <math.h>
570af302Sopenharmony_ci
570af302Sopenharmony_cifloat nearbyintf(float x)
570af302Sopenharmony_ci{
570af302Sopenharmony_ci#ifdef FE_INEXACT
570af302Sopenharmony_ci	#pragma STDC FENV_ACCESS ON
570af302Sopenharmony_ci	int e;
570af302Sopenharmony_ci
570af302Sopenharmony_ci	e = fetestexcept(FE_INEXACT);
570af302Sopenharmony_ci#endif
570af302Sopenharmony_ci	x = rintf(x);
570af302Sopenharmony_ci#ifdef FE_INEXACT
570af302Sopenharmony_ci	if (!e)
570af302Sopenharmony_ci		feclearexcept(FE_INEXACT);
570af302Sopenharmony_ci#endif
570af302Sopenharmony_ci	return x;
570af302Sopenharmony_ci}