diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-05-29 06:09:08 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-05-29 06:09:08 +0000 |
commit | a3ffe9698b8a8dff25d94b3e7e490f0a01684bfe (patch) | |
tree | 6521135a57fcc5508ec052f8725114af7de0b477 /numeric.c | |
parent | e15b3c83b880aa2c2f07378095d1eba0214ca468 (diff) |
* numeric.c (flo_round): fix for negative value.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31778 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'numeric.c')
-rw-r--r-- | numeric.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -97,6 +97,7 @@ round(double x) } #endif +static VALUE fix_uminus(VALUE num); static VALUE fix_mul(VALUE x, VALUE y); static VALUE int_pow(long x, unsigned long y); @@ -1504,10 +1505,15 @@ flo_round(int argc, VALUE *argv, VALUE num) } else { if (ndigits < 0) { - if (fabs(number) < f) return INT2FIX(0); + double absnum = fabs(number); + if (absnum < f) return INT2FIX(0); if (!FIXABLE(number)) { VALUE f10 = int_pow(10, -ndigits); - num = rb_big_idiv(rb_dbl2big(number), f10); + VALUE n10 = f10; + if (number < 0) { + f10 = FIXNUM_P(f10) ? fix_uminus(f10) : rb_big_uminus(f10); + } + num = rb_big_idiv(rb_dbl2big(absnum), n10); return FIXNUM_P(num) ? fix_mul(num, f10) : rb_big_mul(num, f10); } number /= f; |