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#include <math.h> #include <float.h> #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 long double nearbyintl(long double x) { return nearbyint(x); } #else #include <fenv.h> long double nearbyintl(long double x) { fenv_t e; fegetenv(&e); x = rintl(x); fesetenv(&e); return x; } #endif