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* bignum.c (rb_big_odd_p): new method added. a patch from Tadashi

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Saito <shiba AT mail2.accsnet.ne.jp>.  [ruby-dev:32305]

* bignum.c (rb_big_even_p): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13950 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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matz 2007-11-16 14:41:11 +00:00
parent 0d95854a52
commit 4bd57e3311
2 changed files with 41 additions and 0 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
Fri Nov 16 23:31:18 2007 Yukihiro Matsumoto <matz@ruby-lang.org>
* bignum.c (rb_big_odd_p): new method added. a patch from Tadashi
Saito <shiba AT mail2.accsnet.ne.jp>. [ruby-dev:32305]
* bignum.c (rb_big_even_p): ditto.
Fri Nov 16 17:41:34 2007 Nobuyoshi Nakada <nobu@ruby-lang.org> Fri Nov 16 17:41:34 2007 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/iconv/iconv.c (Document-class): moved the simplest example to * ext/iconv/iconv.c (Document-class): moved the simplest example to

34
bignum.c
View file

@ -2431,6 +2431,38 @@ rb_big_size(VALUE big)
return LONG2FIX(RBIGNUM_LEN(big)*SIZEOF_BDIGITS); return LONG2FIX(RBIGNUM_LEN(big)*SIZEOF_BDIGITS);
} }
/*
* call-seq:
* big.odd? -> true or false
*
* Returns <code>true</code> if <i>big</i> is an odd number.
*/
static VALUE
rb_big_odd_p(VALUE num)
{
if (BDIGITS(num)[0] & 1) {
return Qtrue;
}
return Qfalse;
}
/*
* call-seq:
* big.even? -> true or false
*
* Returns <code>true</code> if <i>big</i> is an even number.
*/
static VALUE
rb_big_even_p(VALUE num)
{
if (BDIGITS(num)[0] & 1) {
return Qfalse;
}
return Qtrue;
}
/* /*
* Bignum objects hold integers outside the range of * Bignum objects hold integers outside the range of
* Fixnum. Bignum objects are created * Fixnum. Bignum objects are created
@ -2484,6 +2516,8 @@ Init_Bignum(void)
rb_define_method(rb_cBignum, "to_f", rb_big_to_f, 0); rb_define_method(rb_cBignum, "to_f", rb_big_to_f, 0);
rb_define_method(rb_cBignum, "abs", rb_big_abs, 0); rb_define_method(rb_cBignum, "abs", rb_big_abs, 0);
rb_define_method(rb_cBignum, "size", rb_big_size, 0); rb_define_method(rb_cBignum, "size", rb_big_size, 0);
rb_define_method(rb_cBignum, "odd?", rb_big_odd_p, 0);
rb_define_method(rb_cBignum, "even?", rb_big_even_p, 0);
power_cache_init(); power_cache_init();
} }