X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fstdio%2Fvfprintf.c;h=f13fbe10576d157684ecfc9d4e8bcf448010cd6d;hp=a8cf41b666c9520fc407ca810fd260d9693dd7f4;hb=e8dbf00a789e3b56ca6c3d88e8048b7b2c18b797;hpb=2f3d02cd83a46244c3f5a6fec851d7eded1376f4

diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
index a8cf41b6..f13fbe10 100644
--- a/src/stdio/vfprintf.c
+++ b/src/stdio/vfprintf.c
@@ -326,13 +326,15 @@ static int fmt_fp(FILE *f, long double y, int w, int p, int fl, int t)
 		if (x || d+1!=z) {
 			long double round = CONCAT(0x1p,LDBL_MANT_DIG);
 			long double small;
-			if (x<i/2) small=0x01p-1;
-			else if (i==i/2 && d+1==z) small=0x10p-1;
-			else small=0x11p-1;
+			if (*d/i & 1) round += 2;
+			if (x<i/2) small=0x0.8p0;
+			else if (x==i/2 && d+1==z) small=0x1.0p0;
+			else small=0x1.8p0;
 			if (pl && *prefix=='-') round*=-1, small*=-1;
+			*d -= x;
 			/* Decide whether to round by probing round+small */
 			if (round+small != round) {
-				*d = *d - x + i;
+				*d = *d + i;
 				while (*d > 999999999) {
 					*d--=0;
 					(*d)++;
@@ -341,6 +343,7 @@ static int fmt_fp(FILE *f, long double y, int w, int p, int fl, int t)
 				for (i=10, e=9*(r-a); *a>=i; i*=10, e++);
 			}
 		}
+		if (z>d+1) z=d+1;
 		for (; !z[-1] && z>a; z--);
 	}