summaryrefslogtreecommitdiff
path: root/ext/-test-/bignum/mul.c
diff options
context:
space:
mode:
authorakr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-07-07 14:01:40 +0000
committerakr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-07-07 14:01:40 +0000
commit29634bca310c32b8f8dacd6e9bd8304388b30d17 (patch)
treea302efcad36156493f8e4c51fcde940fe4c20db7 /ext/-test-/bignum/mul.c
parentd7c2f3f8a412b64880fa07b65faabe2b56543290 (diff)
* internal.h (rb_big_mul_normal): Declared.
(rb_big_mul_balance): Ditto. (rb_big_mul_karatsuba): Ditto. * bignum.c (rb_big_mul_normal): New function for tests. (rb_big_mul_balance): Ditto. (rb_big_mul_karatsuba): Ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41824 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/-test-/bignum/mul.c')
-rw-r--r--ext/-test-/bignum/mul.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/ext/-test-/bignum/mul.c b/ext/-test-/bignum/mul.c
new file mode 100644
index 0000000..18ab3f7
--- /dev/null
+++ b/ext/-test-/bignum/mul.c
@@ -0,0 +1,41 @@
+#include "ruby.h"
+#include "internal.h"
+
+static VALUE
+big(VALUE x)
+{
+ if (FIXNUM_P(x))
+ return rb_int2big(FIX2LONG(x));
+ if (RB_TYPE_P(x, T_BIGNUM))
+ return x;
+ rb_raise(rb_eTypeError, "can't convert %s to Bignum",
+ rb_obj_classname(x));
+}
+
+static VALUE
+mul_normal(VALUE x, VALUE y)
+{
+ return rb_big_norm(rb_big_mul_normal(big(x), big(y)));
+}
+
+static VALUE
+mul_balance(VALUE x, VALUE y)
+{
+ return rb_big_norm(rb_big_mul_balance(big(x), big(y)));
+}
+
+static VALUE
+mul_karatsuba(VALUE x, VALUE y)
+{
+ return rb_big_norm(rb_big_mul_karatsuba(big(x), big(y)));
+}
+
+void
+Init_mul(VALUE klass)
+{
+ rb_define_const(rb_cBignum, "SIZEOF_BDIGITS", INT2NUM(SIZEOF_BDIGITS));
+ rb_define_const(rb_cBignum, "BITSPERDIG", INT2NUM(SIZEOF_BDIGITS * CHAR_BIT));
+ rb_define_method(rb_cInteger, "big_mul_normal", mul_normal, 1);
+ rb_define_method(rb_cInteger, "big_mul_balance", mul_balance, 1);
+ rb_define_method(rb_cInteger, "big_mul_karatsuba", mul_karatsuba, 1);
+}