X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Fround.c;h=130d58d2571e77cc15a67b355010e11c5ebebe91;hb=0ce946cf808274c2d6e5419b139e130c8ad4bd30;hp=4b38d1fdbb2adca6f1f89a8ff86dc29e9206f272;hpb=79ca86094d70f43252b683c3a3ccb572d462cf28;p=musl

diff --git a/src/math/round.c b/src/math/round.c
index 4b38d1fd..130d58d2 100644
--- a/src/math/round.c
+++ b/src/math/round.c
@@ -1,5 +1,12 @@
 #include "libm.h"
 
+#if FLT_EVAL_METHOD==0 || FLT_EVAL_METHOD==1
+#define EPS DBL_EPSILON
+#elif FLT_EVAL_METHOD==2
+#define EPS LDBL_EPSILON
+#endif
+static const double_t toint = 1/EPS;
+
 double round(double x)
 {
 	union {double f; uint64_t i;} u = {x};
@@ -12,10 +19,10 @@ double round(double x)
 		x = -x;
 	if (e < 0x3ff-1) {
 		/* raise inexact if x!=0 */
-		FORCE_EVAL(x + 0x1p52);
+		FORCE_EVAL(x + toint);
 		return 0*u.f;
 	}
-	y = (double)(x + 0x1p52) - 0x1p52 - x;
+	y = x + toint - toint - x;
 	if (y > 0.5)
 		y = y + x - 1;
 	else if (y <= -0.5)