diff options
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | bignum.c | 18 | ||||
| -rw-r--r-- | version.h | 6 |
3 files changed, 10 insertions, 18 deletions
@@ -1,3 +1,7 @@ +Mon Jul 16 00:26:10 2007 Nobuyoshi Nakada <nobu@ruby-lang.org> + + * bignum.c (rb_big_pow): removed invariant variable. [ruby-dev:31236] + Sun Jul 15 23:59:57 2007 Nobuyoshi Nakada <nobu@ruby-lang.org> * bignum.c (rb_big_neg): SIGNED_VALUE isn't in 1.8. @@ -1754,7 +1754,7 @@ rb_big_pow(x, y) yy = FIX2LONG(y); if (yy > 0) { VALUE z = 0; - long mask, n = 1; + long mask; if (RBIGNUM(x)->len * SIZEOF_BDIGITS * yy > 1024*1024) { rb_warn("in a**b, b may be too big"); @@ -1762,21 +1762,9 @@ rb_big_pow(x, y) break; } for (mask = FIXNUM_MAX + 1; mask; mask >>= 1) { - if (!z) { - long n2 = n * n; - if (!POSFIXABLE(n2) || (n2 / n != n)) { - z = bigtrunc(bigsqr(rb_int2big(n))); - } - else { - n = n2; - } - } - else { - z = bigtrunc(bigsqr(z)); - } + if (z) z = bigtrunc(bigsqr(z)); if (yy & mask) { - if (!z) z = rb_int2big(n); - z = bigtrunc(rb_big_mul0(z, x)); + z = z ? bigtrunc(rb_big_mul0(z, x)) : x; } } return bignorm(z); @@ -1,7 +1,7 @@ #define RUBY_VERSION "1.8.6" -#define RUBY_RELEASE_DATE "2007-07-15" +#define RUBY_RELEASE_DATE "2007-07-16" #define RUBY_VERSION_CODE 186 -#define RUBY_RELEASE_CODE 20070715 +#define RUBY_RELEASE_CODE 20070716 #define RUBY_PATCHLEVEL 5000 #define RUBY_VERSION_MAJOR 1 @@ -9,7 +9,7 @@ #define RUBY_VERSION_TEENY 6 #define RUBY_RELEASE_YEAR 2007 #define RUBY_RELEASE_MONTH 7 -#define RUBY_RELEASE_DAY 15 +#define RUBY_RELEASE_DAY 16 #ifdef RUBY_EXTERN RUBY_EXTERN const char ruby_version[]; |