X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fmath%2Flrintl.c;h=5eb1ba7edbb24b241b0ee2aa432618f8c029a0d1;hp=c076326f70b5cd32d779b4ec3b7e9f42f9cc49e7;hb=b935147761d1770bb115f09f8c28ddb4d36e1236;hpb=9560b6b152efeb23cc4e570dbaea5ef333ac971f

diff --git a/src/math/lrintl.c b/src/math/lrintl.c
index c076326f..5eb1ba7e 100644
--- a/src/math/lrintl.c
+++ b/src/math/lrintl.c
@@ -1,16 +1,35 @@
-#include <math.h>
-#include <float.h>
+#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)
+{
+	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