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numeric.c: shortcut overflowing operation when ndigit is too small.

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Yukihiro "Matz" Matsumoto
2021-09-06 10:21:42 +09:00
parent ab3db07752
commit fc1f7c4bf0
1 changed files with 1 additions and 0 deletions
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src/numeric.c
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@@ -907,6 +907,7 @@ flo_round(mrb_state *mrb, mrb_value num)
mrb_check_num_exact(mrb, number);
f = 1.0;
if (ndigits < -DBL_DIG-2) return mrb_fixnum_value(0);
i = ndigits >= 0 ? ndigits : -ndigits;
if (ndigits > DBL_DIG+2) return num;
while (--i >= 0)