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authornaruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-12-12 09:12:14 (GMT)
committernaruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-12-12 09:12:14 (GMT)
commit0da34dbb26f3fc2770bd4e0c23ff99d00b4640b3 (patch)
treea787e4b4d2bd971ba6956aef5027321d4d1e1b07 /numeric.c
parent91df3e9b742474215f18dfaa1f63f279341faf17 (diff)
Integer#allbits?, Integer#anybits?, Integer#nobits? [Feature #12753]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61147 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'numeric.c')
-rw-r--r--numeric.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/numeric.c b/numeric.c
index dcf766e..cd84956 100644
--- a/numeric.c
+++ b/numeric.c
@@ -3166,6 +3166,45 @@ int_even_p(VALUE num)
}
/*
+ * call-seq:
+ * int.allbits?(mask) -> true or false
+ *
+ * Returns +true+ if all bits of <code>+int+ & +mask+</code> is 1.
+ */
+
+static VALUE
+int_allbits_p(VALUE num, VALUE mask)
+{
+ return rb_int_equal(rb_int_and(num, mask), mask);
+}
+
+/*
+ * call-seq:
+ * int.anybits?(mask) -> true or false
+ *
+ * Returns +true+ if any bits of <code>+int+ & +mask+</code> is 1.
+ */
+
+static VALUE
+int_anybits_p(VALUE num, VALUE mask)
+{
+ return num_zero_p(rb_int_and(num, mask)) ? Qfalse : Qtrue;
+}
+
+/*
+ * call-seq:
+ * int.nobits?(mask) -> true or false
+ *
+ * Returns +true+ if no bits of <code>+int+ & +mask+</code> is 1.
+ */
+
+static VALUE
+int_nobits_p(VALUE num, VALUE mask)
+{
+ return num_zero_p(rb_int_and(num, mask));
+}
+
+/*
* Document-method: Integer#succ
* Document-method: Integer#next
* call-seq:
@@ -5352,6 +5391,9 @@ Init_Numeric(void)
rb_define_method(rb_cInteger, "integer?", int_int_p, 0);
rb_define_method(rb_cInteger, "odd?", rb_int_odd_p, 0);
rb_define_method(rb_cInteger, "even?", int_even_p, 0);
+ rb_define_method(rb_cInteger, "allbits?", int_allbits_p, 1);
+ rb_define_method(rb_cInteger, "anybits?", int_anybits_p, 1);
+ rb_define_method(rb_cInteger, "nobits?", int_nobits_p, 1);
rb_define_method(rb_cInteger, "upto", int_upto, 1);
rb_define_method(rb_cInteger, "downto", int_downto, 1);
rb_define_method(rb_cInteger, "times", int_dotimes, 0);