From a0d50fa3c494ea5afb98c05be049a0cde6fde28d Mon Sep 17 00:00:00 2001 From: usa Date: Thu, 5 Jul 2007 07:38:41 +0000 Subject: * numeric.c (int_pow): fix previous nubu's commit. * test/ruby/test_fixnum.rb: new test. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- numeric.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'numeric.c') diff --git a/numeric.c b/numeric.c index eba69debb8..c331030d63 100644 --- a/numeric.c +++ b/numeric.c @@ -2281,7 +2281,10 @@ int_pow(long x, unsigned long y) long z = 1; if (neg) x = -x; - if (y & 1) z = x; + if (y & 1) + z = x; + else + neg = 0; y &= ~1; do { while (y % 2 == 0) { @@ -2289,8 +2292,8 @@ int_pow(long x, unsigned long y) if (x2 < x || !POSFIXABLE(x2)) { VALUE v; bignum: - v = rb_big_pow(rb_int2big(neg ? -x : x), LONG2NUM(y)); - if (z != 1) v = rb_big_mul(rb_int2big(z), v); + v = rb_big_pow(rb_int2big(x), LONG2NUM(y)); + if (z != 1) v = rb_big_mul(rb_int2big(neg ? -z : z), v); return v; } x = x2; @@ -2304,7 +2307,7 @@ int_pow(long x, unsigned long y) z = xz; } } while (--y); - if (neg && (y & 1)) z = -z; + if (neg) z = -z; return LONG2NUM(z); } -- cgit v1.2.3