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-rw-r--r--lib/libc/gdtoa/_hdtoa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libc/gdtoa/_hdtoa.c b/lib/libc/gdtoa/_hdtoa.c
index 11fc93e..5e8a1835 100644
--- a/lib/libc/gdtoa/_hdtoa.c
+++ b/lib/libc/gdtoa/_hdtoa.c
@@ -78,7 +78,7 @@ dorounding(char *s0, int ndigits, int sign, int *decpt)
break;
case 1: /* to nearest, halfway rounds to even */
if ((s0[ndigits] > 8) ||
- (s0[ndigits] == 8 && s0[ndigits - 1] & 1))
+ (s0[ndigits] == 8 && s0[ndigits + 1] & 1))
adjust = roundup(s0, ndigits);
break;
case 2: /* toward +inf */
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