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| author | Kazuki Yamaguchi <k@rhe.jp> | 2016-12-08 15:23:39 +0900 |
|---|---|---|
| committer | Kazuki Yamaguchi <k@rhe.jp> | 2016-12-23 13:14:09 +0900 |
| commit | faaa3021385b5432dc960dfc8ca55d1b2fc89d3b (patch) | |
| tree | 18695137e7351a5830b882f5626ac433a1b526d1 | |
| parent | 9b30cc419be9e1485ce535463a159c9ce21189d4 (diff) | |
| download | ruby-openssl-faaa3021385b5432dc960dfc8ca55d1b2fc89d3b.tar.gz | |
bn: implement unary {plus,minus} operators for OpenSSL::BN
For consistency with Numeric. Not sure why they aren't currently; maybe
they were simply forgotten.
| -rw-r--r-- | ext/openssl/ossl_bn.c | 34 | ||||
| -rw-r--r-- | test/test_bn.rb | 7 |
2 files changed, 41 insertions, 0 deletions
diff --git a/ext/openssl/ossl_bn.c b/ext/openssl/ossl_bn.c index 4e371cb2..1afebf44 100644 --- a/ext/openssl/ossl_bn.c +++ b/ext/openssl/ossl_bn.c @@ -856,6 +856,37 @@ ossl_bn_copy(VALUE self, VALUE other) return self; } +/* + * call-seq: + * +bn -> aBN + */ +static VALUE +ossl_bn_uplus(VALUE self) +{ + return self; +} + +/* + * call-seq: + * -bn -> aBN + */ +static VALUE +ossl_bn_uminus(VALUE self) +{ + VALUE obj; + BIGNUM *bn1, *bn2; + + GetBN(self, bn1); + obj = NewBN(cBN); + bn2 = BN_dup(bn1); + if (!bn2) + ossl_raise(eBNError, "BN_dup"); + SetBN(obj, bn2); + BN_set_negative(bn2, !BN_is_negative(bn2)); + + return obj; +} + #define BIGNUM_CMP(func) \ static VALUE \ ossl_bn_##func(VALUE self, VALUE other) \ @@ -1068,6 +1099,9 @@ Init_ossl_bn(void) rb_define_method(cBN, "num_bits", ossl_bn_num_bits, 0); /* num_bits_word */ + rb_define_method(cBN, "+@", ossl_bn_uplus, 0); + rb_define_method(cBN, "-@", ossl_bn_uminus, 0); + rb_define_method(cBN, "+", ossl_bn_add, 1); rb_define_method(cBN, "-", ossl_bn_sub, 1); rb_define_method(cBN, "*", ossl_bn_mul, 1); diff --git a/test/test_bn.rb b/test/test_bn.rb index 4ee7f4e0..ac4334fd 100644 --- a/test/test_bn.rb +++ b/test/test_bn.rb @@ -116,6 +116,13 @@ class OpenSSL::TestBN < OpenSSL::TestCase assert_raise(OpenSSL::BNError) { 1.to_bn / 0 } end + def test_unary_plus_minus + assert_equal(999, +@e1) + assert_equal(-999, +@e2) + assert_equal(-999, -@e1) + assert_equal(+999, -@e2) + end + def test_mod assert_equal(1, 1.to_bn % 2) assert_equal(0, 2.to_bn % 1) |