mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
merge revision(s) 33198,33199:
* numeric.c (flo_round): Fix criteria for 32 bits platform part 2 of [bug #5276] * numeric.c (dbl2ival): Fix Float#divmod and #round for 32 bit platform. part 1 of [bug #5276] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@33899 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
parent
68336beb50
commit
72fba5701c
3 changed files with 17 additions and 7 deletions
10
ChangeLog
10
ChangeLog
|
@ -1,3 +1,13 @@
|
|||
Wed Nov 30 02:58:46 2011 Marc-Andre Lafortune <ruby-core@marc-andre.ca>
|
||||
|
||||
* numeric.c (dbl2ival): Fix Float#divmod and #round for 32 bit
|
||||
platform. part 1 of [bug #5276]
|
||||
|
||||
Wed Nov 30 02:58:46 2011 Marc-Andre Lafortune <ruby-core@marc-andre.ca>
|
||||
|
||||
* numeric.c (flo_round): Fix criteria for 32 bits platform
|
||||
part 2 of [bug #5276]
|
||||
|
||||
Wed Nov 30 02:37:32 2011 Marc-Andre Lafortune <ruby-core@marc-andre.ca>
|
||||
|
||||
* numeric.c (flo_round): Make Float#round round big values [bug
|
||||
|
|
12
numeric.c
12
numeric.c
|
@ -873,8 +873,8 @@ flo_mod(VALUE x, VALUE y)
|
|||
static VALUE
|
||||
dbl2ival(double d)
|
||||
{
|
||||
d = round(d);
|
||||
if (FIXABLE(d)) {
|
||||
d = round(d);
|
||||
return LONG2FIX((long)d);
|
||||
}
|
||||
return rb_dbl2big(d);
|
||||
|
@ -1560,16 +1560,16 @@ flo_round(int argc, VALUE *argv, VALUE num)
|
|||
10 ** ((binexp-1)/log_2(10)) <= |number| < 10 ** (binexp/log_2(10))
|
||||
If binexp >= 0, and since log_2(10) = 3.322259:
|
||||
10 ** (binexp/4 - 1) < |number| < 10 ** (binexp/3)
|
||||
binexp/4 <= exp <= binexp/3
|
||||
floor(binexp/4) <= exp <= ceil(binexp/3)
|
||||
If binexp <= 0, swap the /4 and the /3
|
||||
So if ndigits + binexp/(4 or 3) >= float_dig, the result is number
|
||||
If ndigits + binexp/(3 or 4) < 0 the result is 0
|
||||
So if ndigits + floor(binexp/(4 or 3)) >= float_dig, the result is number
|
||||
If ndigits + ceil(binexp/(3 or 4)) < 0 the result is 0
|
||||
*/
|
||||
if (isinf(number) || isnan(number) ||
|
||||
(((long)ndigits - float_dig) * (3 + (binexp > 0)) + binexp >= 0)) {
|
||||
(ndigits >= float_dig - (binexp > 0 ? binexp / 4 : binexp / 3 - 1))) {
|
||||
return num;
|
||||
}
|
||||
if ((long)ndigits * (4 - (binexp > 0)) + binexp < 0) {
|
||||
if (ndigits < - (binexp > 0 ? binexp / 3 + 1 : binexp / 4)) {
|
||||
return DBL2NUM(0);
|
||||
}
|
||||
f = pow(10, ndigits);
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
#define RUBY_VERSION "1.9.3"
|
||||
#define RUBY_PATCHLEVEL 2
|
||||
#define RUBY_PATCHLEVEL 3
|
||||
|
||||
#define RUBY_RELEASE_DATE "2011-11-30"
|
||||
#define RUBY_RELEASE_YEAR 2011
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue