X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Froundf.c;h=e8210af5621aa392543616d308200ddb22523281;hb=c5f4b2dfea320356f69445dc1adf8f73596a3c36;hp=c6b277979038e0abd5ddc566342e674c8d570810;hpb=d1a2ead878c27ac4ec600740320f8b76e1f961e9;p=musl

diff --git a/src/math/roundf.c b/src/math/roundf.c
index c6b27797..e8210af5 100644
--- a/src/math/roundf.c
+++ b/src/math/roundf.c
@@ -1,5 +1,14 @@
 #include "libm.h"
 
+#if FLT_EVAL_METHOD==0
+#define EPS FLT_EPSILON
+#elif FLT_EVAL_METHOD==1
+#define EPS DBL_EPSILON
+#elif FLT_EVAL_METHOD==2
+#define EPS LDBL_EPSILON
+#endif
+static const float_t toint = 1/EPS;
+
 float roundf(float x)
 {
 	union {float f; uint32_t i;} u = {x};
@@ -11,10 +20,10 @@ float roundf(float x)
 	if (u.i >> 31)
 		x = -x;
 	if (e < 0x7f-1) {
-		FORCE_EVAL(x + 0x1p23f);
+		FORCE_EVAL(x + toint);
 		return 0*u.f;
 	}
-	y = (float)(x + 0x1p23f) - 0x1p23f - x;
+	y = x + toint - toint - x;
 	if (y > 0.5f)
 		y = y + x - 1;
 	else if (y <= -0.5f)