+#include <limits.h>
+#include <fenv.h>
#include "libm.h"
+
+
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long lrintl(long double x)
{
return lrint(x);
}
-#else
-#define type long double
-#define roundit rintl
-#define dtype long
-#define fn lrintl
+#elif defined(FE_INEXACT)
+/*
+see comments in lrint.c
+
+Note that if LONG_MAX == 0x7fffffffffffffff && LDBL_MANT_DIG == 64
+then x == 2**63 - 0.5 is the only input that overflows and
+raises inexact (with tonearest or upward rounding mode)
+*/
+long lrintl(long double x)
+{
+ #pragma STDC FENV_ACCESS ON
+ int e;
-#include "lrint.c"
+ e = fetestexcept(FE_INEXACT);
+ x = rintl(x);
+ if (!e && (x > LONG_MAX || x < LONG_MIN))
+ feclearexcept(FE_INEXACT);
+ /* conversion */
+ return x;
+}
+#else
+long lrintl(long double x)
+{
+ return rintl(x);
+}
#endif